<p><strong>MK4 to MK4S upgrade <br /></strong></p>
<p>The current lead time is <strong>1-2 weeks </strong>for both xLCD versions. <br /><em>Due to high demand, we cannot guarantee delivery of this product before Christmas.</em></p>
<h3><span style="font-size: 20px;">Current lead time estimates for new orders</span></h3>
<p><span style="color: #e67e23;"><strong>Updated: December 17th, 2024 </strong></span></p>
<p><em>The dates are only an estimation at the date of update, specified above, and rely on the actual</em> production. <em>We're doing our best but please be aware that it can shift for the lead time products. We will update here and on the product pages accordingly.</em></p>
<p>The lead time estimate applies to standalone products, other products in the order may increase the lead time.</p>
<p>If you've ordered a product in a bundle, the lead time of the order is set based on the product in the bundle with the longest lead time.</p>
<p><strong>Due to high demand, we cannot guarantee delivery of the following products before Christmas.</strong></p>
<p></p>
<table class="table" style="border-collapse: collapse; height: 930.875px; border-style: ridge; width: 100%;" border="1">
<tbody>
<tr style="height: 60.875px;">
<td style="height: 60.875px; width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center;">
<h4>Product</h4>
</td>
<td style="height: 60.875px; width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center;">
<h4>Lead time</h4>
</td>
</tr>
<tr style="height: 72px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>MK4 to MK4S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>MK3.9 to MK3.9S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>MK3S/+ to MK4S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>4-5</strong><strong> weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>MK3S/+ to MK3.9S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>MK3S/S+ to MK3.5S</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>Original Prusa MK4S</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>Original Prusa MK4S kit</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>4-5 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>Original Prusa XL</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 72px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>Original Prusa MMU3 upgrade kit <br />(all printer models)</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 72px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>Original Prusa MMU2S to MMU3 upgrade<br />(MK3.9/S &amp; MK4/S)</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>4-5 weeks</strong></p>
</td>
</tr>
<tr style="height: 72px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>Original Prusa MMU3 assembled unit<br />(MK3.9/S &amp; MK4/S)</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>4-5 weeks</strong></p>
</td>
</tr>
<tr style="height: 72px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>Original Prusa MMU3 assembled unit<br />(MK3S+ &amp; MK3.5/S)</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>Original Prusa XL Enclosure</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>Original Prusa MINI Enclosure</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>1-2 weeks</strong></p>
</td>
</tr>
<tr style="height: 51px;">
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>Original Prusa MK Enclosure </strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>4-5 weeks</strong></p>
</td>
</tr>
</tbody>
</table>
<p>You can find your order shipping date in the order detail section in our shop.</p>
<div class="note-callout">All products purchased in our <a href="https://shop.prusa3d.com/">online store</a> are currently being shipped from the<strong> Czech Republic, </strong>a member state of the <strong>European Union, customs charges may apply for shipments to countries outside of the EU!</strong> Please see our advisory article <a href="http://help.prusa3d.com/article/vat-value-added-tax-customs-fees_1505#orders-outside-eu">here</a>.</div>

Shipping information

<div>
<h3 dir="ltr">Stable releases</h3>
<p dir="ltr">The latest <strong>stable release</strong> of PrusaSlicer can be always found in the <a href="https://www.prusa3d.com/drivers/">DRIVERS &amp; APPS package</a> and it’s available for Windows, Mac OS X, and Linux. The package also includes test objects and printer drivers, but you can choose to install only PrusaSlicer.</p>
<p dir="ltr">You can also download a standalone installer for your computer at <a href="https://www.prusa3d.com/page/prusaslicer_424/">PrusaSlicer introduction &amp; download</a> or at <a href="https://github.com/prusa3d/PrusaSlicer/releases">our GitHub</a>.</p>
<p dir="ltr">Stable releases are versions that have been tested as thoroughly as possible and have gone through numerous public alpha- and beta-versions.</p>
<h3 dir="ltr">Alpha and Beta releases</h3>
<p dir="ltr">Do you want to keep up with PrusaSlicer’s fast development pace? Development builds have the latest features and bug fixes. However, they can be unstable, crash, or behave unexpectedly. We do not recommend using development builds in production environments. Check out <a href="https://github.com/prusa3d/PrusaSlicer/releases">our GitHub</a> for downloads and more info.</p>
<div class="tip-callout">For how to install PrusaSlicer on most computers, see our article <a href="http://help.prusa3d.com/article/install-prusaslicer_1903">Install PrusaSlicer</a>.</div>
</div>


Download PrusaSlicer

<div class="note-callout">Some options will only appear when <a href="http://help.prusa3d.com/article/simple-advanced-expert-modes_1765">Expert mode</a> is selected.</div>
<h3 dir="ltr">Layer height</h3>
<p dir="ltr">Height of the individual slices/thickness of each layer. Layer height is the main factor affecting both:</p>
<ul>
<li dir="ltr" role="presentation">print time</li>
<li dir="ltr" role="presentation">vertical resolution</li>
</ul>
<p dir="ltr">By choosing <strong>taller layer heights</strong> you can significantly <strong>shorten the print time</strong> at the cost of more visible layers. On the other hand, choosing <strong>a small layer height</strong> (e.g. 0.10 mm) will result in <strong>extra detail</strong> at the cost of longer print times.</p>
<p dir="ltr">Generally, we do not suggest going lower than 0.10 mm as the improvement in print quality with 0.07 or 0.05 mm layers is relatively minor with significantly longer print times.</p>
<p dir="ltr">Keep in mind, that layer height changes only the <strong>vertical </strong>resolution. For example, an embossed text parallel with the print bed will look the same regardless of the layer height. If you’re looking for increased resolution in the <strong>XY plane</strong>, <a href="https://blog.prusaprinters.org/everything-about-nozzles-with-a-different-diameter_8344/">check nozzles with a different diameter</a>.</p>
<p dir="ltr">The layer height should be below 80% of the nozzle diameter (e.g. the maximum layer height with a 0.4 mm nozzle is about 0.32 mm). The layer height cannot be higher than the nozzle diameter, PrusaSlicer will display an error message if you try to input such a value.</p>
<p dir="ltr">You can also consider using the <a href="http://help.prusa3d.com/article/variable-layer-height-function_1750">Variable layer height function</a>.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/layer_height.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/layer_height-300x118.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/layer_height-600x237.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/layer_height-768x303.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/layer_height-800x316.jpg 800w" alt="" /></p>
<h3 dir="ltr">First layer height</h3>
<p dir="ltr">When printing with low layer heights you might still want to print a thicker first layer to increase adhesion to the print bed. <strong>Original Prusa print profiles always use 0.20 mm as the first layer height.</strong></p>
<p dir="ltr">You can express this as an absolute value (e.g. 0.20 mm) or a percentage of the default layer height (e.g. 150%).</p>
<p>Changing the first layer height will most likely require adjusting the <strong>calibration of the first layer</strong> on your printer.</p>
<h3 dir="ltr">Perimeters</h3>
<p dir="ltr">Defines the minimum number of outlines that form the wall of a model. Original Prusa profiles always use a minimum of two perimeters.</p>
<p>The strength of a model is mostly defined by the number of perimeters (not the infill). If you want a stronger print, increase the number of perimeters.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/perimeters.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/perimeters-300x81.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/perimeters-600x162.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/perimeters-768x207.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/perimeters-800x216.jpg 800w" alt="" /></p>
<h3 dir="ltr">Spiral vase</h3>
<p dir="ltr">Creates a continuous single outline container, gradually increasing the Z height.</p>
<p dir="ltr">When printing anything with a single-perimeter wall, there is always a small flaw where the printer advances to the next layer. This spot, where the printer stops and finishes the perimeter, raises the Z height by the layer height and starts a new perimeter, creates an unsightly ‘scar’ running up the side of the model. This scar is also a weak point of the print.</p>
<p dir="ltr">the spiral vase does not have any such point where the layer changes, except the first N bottom solid layers. Instead, the height is increasing gradually all the time, until the top of the print is reached.</p>
<p dir="ltr">When the vase mode is activated, PrusaSlicer automatically sets related settings accordingly:</p>
<ul>
<li dir="ltr" role="presentation">one perimeter</li>
<li dir="ltr" role="presentation">0% infill</li>
<li dir="ltr" role="presentation">disabled top solid layers</li>
<li dir="ltr" role="presentation">disabled supports</li>
<li dir="ltr" role="presentation">disabled "ensure vertical shell thickness"</li>
</ul>
<div class="note-callout">Keep in mind that simply changing these settings and not enabling the vase mode is not the same as true vase mode, as the object won’t be printed continuously.</div>
<p dir="ltr">You can still adjust the number of <strong>bottom solid layers</strong>. Furthermore, you can adjust the <strong>External perimeters Extrusion width</strong> in the <strong>Advanced</strong> menu to get a thicker/stronger/watertight vase (e.g. from 0.45 to 0.6).</p>
<p dir="ltr">The model should be defined as a solid. Otherwise, PrusaSlicer will try (and fail) to create both inside and outside surfaces, so model the outside dimensions only.</p>
<p dir="ltr"><strong>Only one object at a time can be printed in the vase mode</strong>. If you had multiple objects on the print bed, it would be impossible to print them continuously. You can get around this limitation by enabling Sequential printing.</p>
<h3 dir="ltr">Recommended thin wall thickness</h3>
<p dir="ltr">For a selected number of perimeters and layer height, PrusaSlicer calculates the <strong>optimal thin wall thickness</strong>. If you go back to your CAD drawing and change the wall thickness to this exact value, you will eliminate unnecessary perimeter overlap and your print will have a perfect wall surface finish.</p>
<p dir="ltr">Normally you get recommendations for an even number of perimeters (2,4,6…). If you enable Detect thin walls, you will also get a recommendation for an odd number of perimeters (1,3…).</p>
<p dir="ltr">You may think, that when the extrusion width for a perimeter is 0.45 mm, two perimeters will be 0.90 mm wide (2x0,45). However, if you look at the recommendation for a 0.2 mm layer height, you will find that this is not true and the suggested value is 0.86 mm.</p>
<p dir="ltr">In order to understand how this number is calculated, we need to take a look at the perimeter cross-section. PrusaSlicer assumes that the cross-section of an extrusion is a rectangle with semicircular ends. Note that the extrusion width includes the two semicircular ends.</p>
<p dir="ltr"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/extrusion_approx-01-01-1.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/extrusion_approx-01-01-1-300x169.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/extrusion_approx-01-01-1-600x337.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/extrusion_approx-01-01-1-768x432.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/extrusion_approx-01-01-1-800x450.png 800w" alt="" /></p>
<p dir="ltr" style="text-align: center;"><em>(This image is a re-draw of the original source: <a href="https://manual.slic3r.org/advanced/flow-math">https://manual.slic3r.org/advanced/flow-math</a>)</em></p>
<p dir="ltr">Now let’s add a second extrusion/perimeter. If we suppose no overlap (tangent paths), there would be empty space (yellow). In order to fill the empty space and bond the perimeters together, PrusaSlicer slightly overlaps the perimeters. This is essentially why you can’t just multiply the number of perimeters by the width of a single perimeter to get the ideal wall thickness.</p>
<p dir="ltr"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/perimeter_overlap-01-1.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/perimeter_overlap-01-1-300x119.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/perimeter_overlap-01-1-600x238.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/perimeter_overlap-01-1-768x305.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/perimeter_overlap-01-1-800x318.png 800w" alt="" /></p>
<p dir="ltr" style="text-align: center;"><em>(This image was heavily inspired by the original source: <a href="https://manual.slic3r.org/advanced/flow-math">https://manual.slic3r.org/advanced/flow-math</a>)</em></p>
<div class="note-callout">Note that the layer height (h) is used in the calculation and the implication this has - if you change the layer height, your ideal wall thickness will change as well!</div>
<p dir="ltr">For more information, check the <a href="https://manual.slic3r.org/advanced/flow-math">Slic3r Flow math page</a> (parts of this text are sourced from the same page).</p>
<h3 dir="ltr">Solid layers - top/bottom</h3>
<p dir="ltr">The bottom and top parts of models are usually filled with solid layers (100% infill).</p>
<p dir="ltr">You can set <strong>how many top and bottom layers</strong> you wish to print. You can also set a <span style="font-weight: 400;"><strong>minimum wall thickness</strong>, which is especially useful when using the variable layer height function. The tooltip below these settings will update with every change, giving you a better idea of the resulting top/bottom wall thickness.</span></p>
<p dir="ltr">Setting the top or bottom solid layers to 0 overrides the minimum wall thickness. So you don't have to set the minimum wall thickness to 0 as well to get top or bottom layers.</p>
<p dir="ltr"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2024/08/41556b3e1891b8d0ae47c43fb032cb68.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Layers and Perimeters REVIEW" alt="" width="600" height="128" loading="lazy" /></p>
<p dir="ltr">The top solid infill is essentially bridging over the infill pattern. Because of that, you’ll almost always see some sag in the first few solid infill lines. The lower the infill, the longer the bridging distance, and as a result the bigger the sag. This can be counteracted by simply increasing the number of solid layers - we suggest at least 3 top layers. You can further reduce this behavior with a modifier mesh, which increases the infill for the last few layers before the solid infill.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/top_layers-1.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/top_layers-1-300x99.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/top_layers-1-600x198.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/top_layers-1-768x254.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/top_layers-1-800x264.jpg 800w" alt="" /></p>
<p dir="ltr" style="text-align: center;"><em>From left to right, 1, 2, 3, and 5 top layers, printed at 0.1 mm layer height.</em></p>
<p dir="ltr">Note that when printing at low layer heights, you will need more solid layers to achieve the same top/bottom wall thickness (e.g. with 0.3 mm layer height use 3 top layers, with 0.1 mm layer height use 9 top layers).</p>
<p dir="ltr">The default solid infill pattern is rectilinear, however, there are several other patterns to choose from.</p>
<h3 dir="ltr">Extra perimeters if needed</h3>
<p>A legacy option that as far as we know, doesn't do anything anymore. Let us know if you find a case where this changes anything.</p>
<h3 dir="ltr">Ensure vertical shell thickness</h3>
<p>This option was removed in PrusaSlicer 2.6. The new algorithm is much smarter than the previous implementations and is automatically applied where needed.</p>
<p dir="ltr">This function solves one of the biggest issues of older slicers, holes between the perimeters on a slanted surface. This was typical when printing busts and other organic-looking models. Such objects typically had a few holes on top of the head. With this function enabled, PrusaSlicer ensures it lays down the needed (internal) supports for perimeters in an upcoming layer.</p>
<p dir="ltr"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/ensure_vertical_wall_thickness_upscaled.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/ensure_vertical_wall_thickness_upscaled-300x173.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/ensure_vertical_wall_thickness_upscaled-600x346.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/ensure_vertical_wall_thickness_upscaled-768x443.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/ensure_vertical_wall_thickness_upscaled-800x462.jpg 800w" alt="" /></p>
<h3 dir="ltr">Avoid crossing perimeters</h3>
<p>Avoid crossing perimeters is an algorithm to minimize crossings of external perimeters during travel moves, which reduces stringing (especially with Bowden extruders) and improves overall print quality. </p>
<p dir="ltr">Enabling this feature slows down the G-code generation and increases print time somewhat (time increase varies between models).</p>
<p dir="ltr">This feature was significantly improved in PrusaSlicer 2.3. The new algorithm tries to route a travel path inside object islands with the shortest path while avoiding holes and concavities, while it takes the shortest path when traveling between islands.</p>
<p dir="ltr">If the detour is longer than the <strong>Max detour length</strong>, avoid crossing perimeters will not be applied for this travel move. You can use absolute values in millimeters, a percentage of the travel move, or set it to 0 to disable Max detour length check.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2-600x286.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2-800x382.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2-300x143.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2-768x366.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2-1536x733.jpg 1536w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/avoid_crossing2-2048x977.jpg 2048w" alt="" width="1841" height="879" loading="lazy" /></p>
<h3 dir="ltr">Detect thin walls</h3>
<p dir="ltr">By default, every wall consists of outside and inside perimeters (a minimum of two perimeters for thin walls). If there is enough space, an infill pattern fills the void between these inside/outside perimeters. </p>
<p>Enabling <strong>Detect thin walls</strong> lets PrusaSlicer generate a single perimeter that works as both an inside &amp; outside shell. This will help to capture tiny details. However, walls thinner than a single perimeter extrusion width will likely still be ignored.</p>
<p>This feature is automatically disabled if the <strong>Arachne perimeter generator</strong> is active, as it already automatically adjusts for thin walls.</p>
<h3 dir="ltr">Thick bridges</h3>
<p>For historical reasons, PrusaSlicer used to print bridges with extremely thick lines. This makes bridging very reliable and lets you bridge longer distances, but they didn’t look good. The new default behavior uses your current layer height for bridging, making bridging reliable for shorter distances but looking significantly better. This is the strategy that most modern slicers use. You can switch to the old behavior by enabling the <strong>Thick Bridges</strong> option. Since the first solid layer above supports uses the bridging settings, <strong>this change also has a big impact on how supported overhangs look</strong>.</p>
<p><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy-600x292.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy-800x389.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy-300x146.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy-768x374.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy-1536x748.jpg 1536w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy-2048x997.jpg 2048w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/130222466-686942dc-7d52-4dfa-b35c-e3640897445b-copy.jpg 1600w" alt="" width="1847" height="899" loading="lazy" /></p>
<p style="text-align: center;"><em> Left: Thick bridges enabled, Right: Thick bridges disabled</em></p>
<h3 dir="ltr">Detect bridging perimeters</h3>
<p>Enables <strong>bridging flow</strong> for overhangs and turns on the fan. </p>
<h3>Seam position</h3>
<p>Determines the start point of each perimeter loop, and thus the position of the potentially visible <strong>vertical seam</strong> on the side of the object. Unless you're printing in the Spiral vase mode.</p>
<p>The seam looks like a tiny zit on the model surface. PrusaSlicer can attempt to hide the seam into model edges (using the “<strong>Nearest</strong>” setting) or on the rear side (“<strong>Rear</strong>”), spread them randomly on the surface (“<strong>Random</strong>”), or arrange them into lines (“<strong>Aligned</strong>”).</p>
<p>You'll find more information and pictures in the <a href="http://help.prusa3d.com/article/seam-position_151069">Seam position</a> article.</p>
<h3>Staggered inner seams</h3>
<p>This feature causes the inner seams to be shifted backward based on their depth, forming a zigzag pattern. This creates a stronger part by avoiding that the seams align.</p>
<h3>External perimeters first</h3>
<p>Perimeters will be printed from the outermost to the innermost ones instead of in the inverse order.</p>
<p>This parameter may help with <strong>dimensional accuracy</strong> since the outer perimeter is laid down first and any extra filament extruded when printing following perimeters is pressed back away from the outer wall. On the other hand, the surface may be slightly less smooth.</p>
<h3>Fill gaps</h3>
<p>Enables filling of gaps between individual perimeters and between the innermost perimeter and infill.</p>
<h3>Perimeter generator</h3>
<p>Allow you to switch between the Arachne (default) and the Classic perimeter generator. The Arachne perimeter generator automatically adjusts the extrusion width of perimeters as needed. For most prints the Arachne perimeter generator is superior, but for some functional prints where the accuracy of concave corners is important, the classic perimeter generator may be better.</p>


Layers and perimeters

<p dir="ltr">3D printers work by laying layer over layer of plastic to create a 3D object. Each new layer must be supported by the one beneath it. If part of your model starts in mid-air and is not supported by anything below, you need to add an additional support structure to ensure a successful print.</p>
<div class="tip-callout">It is worth considering altering the orientation of the model or splitting the model into multiple parts in order to possibly reduce overhangs and consequently the amount of supports generated.</div>
<p dir="ltr">PrusaSlicer can both detect areas that need supports and generate them in these places <strong>automatically</strong>.</p>
<p dir="ltr">You can also set supports manually using:</p>
<ul>
<li dir="ltr"><a href="http://help.prusa3d.com/article/paint-on-supports_168584">Paint on supports</a></li>
<li dir="ltr"><a href="http://help.prusa3d.com/article/modifier-meshes-custom-supports-and-other-magic_114258#custom-supports">Support enforcers and blockers</a></li>
</ul>
<p dir="ltr">Supports can be turned on from the <strong>right panel</strong> or in the <strong>Print settings - Support material - Generate support material</strong>.</p>
<p dir="ltr">There are 3 different Support styles in PrusaSlicer</p>
<ul>
<li dir="ltr">Grid</li>
<li dir="ltr">Snug</li>
<li dir="ltr"><a href="http://help.prusa3d.com/article/organic-supports_480131">Organic</a></li>
</ul>
<p dir="ltr">When the print finishes, depending on the model geometry and material used, the support structure is often easily removable with bare hands. You can use pliers to get a better grip in otherwise hard-to-reach places. A scalpel or a utility knife can also be used to cleanly remove a piece of support that seems to be stuck to the model.</p>
<div class="warning-callout">Pieces of supports can be surprisingly sharp and are sometimes violently ejected in a random direction after removal. When you encounter hard-to-remove supports, <strong>consider wearing protective glasses</strong> (this sounds stupid until you get hit in the eye for the first time).</div>
<h3 dir="ltr">Supports everywhere</h3>
<p dir="ltr">Supports can grow from both the print bed and any model surface when necessary. </p>
<p dir="ltr">This ensures that every overhang and part starting mid-air will get supported. However, small imperfections may appear on the surface where supports started growing from.</p>
<h3 dir="ltr">Supports from build plate only</h3>
<p>Creates only supports that have their base at the print bed.</p>
<p><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/everywhere_build_plate_only.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/everywhere_build_plate_only-300x171.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/everywhere_build_plate_only-600x343.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/everywhere_build_plate_only-768x439.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/everywhere_build_plate_only-800x457.jpg 800w" alt="" /></p>
<p style="text-align: center;"><em>Supports from build plate only (left), supports everywhere (right)</em></p>
<h3 dir="ltr">For support enforcers only</h3>
<p dir="ltr">Automatic support generation is enabled only for areas marked with a support enforcer. This option is essentially a shortcut that turns <strong>Print settings - Support material - Generate support material</strong> on, but <strong>Print settings - Support material - Auto-generated supports</strong> off.</p>
<h3 dir="ltr">Supports on/off for individual models</h3>
<p dir="ltr">It’s possible to print multiple objects at once each with its own support settings. By default, all models are affected by the global settings. You can overwrite them by <strong>right-clicking</strong> on a model in the 3D view and selecting <strong>Support material</strong>. Alternatively, you can right-click on the editing icon in the Object list.</p>
<p dir="ltr">A new window will appear in the right panel called <strong>Object settings to modify - Support material</strong>. Changing these settings will affect only the relevant object and its instances. You can remove the settings overwrite by clicking on the red cross icon. When you do so, the global settings will once again be applied.</p>
<p dir="ltr"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/supports_per_object-2.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/supports_per_object-2-300x149.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/supports_per_object-2-600x299.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/supports_per_object-2-768x383.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/supports_per_object-2-800x399.png 800w" alt="" width="495" height="247" loading="lazy" /></p>
<h3 dir="ltr">Support enforcer/blocker</h3>
<p dir="ltr">The automatic supports can sometimes appear in hard-to-reach places, resulting in a tedious removal of support structures. If you think such a part of the model could be printed without supports, but neither the <strong>Overhang threshold</strong> setting nor selecting <strong>Supports on built plate only</strong> helped, you can adjust supports manually.</p>
<div class="tip-callout">Starting with PrusaSlicer 2.3, you can also use <a href="http://help.prusa3d.com/article/paint-on-supports_168584">Paint on supports</a>.</div>
<p dir="ltr"><strong>Right-click</strong> on a model and choose either a <strong>Support blocker or Support enforcer</strong>.</p>
<p dir="ltr"><span style="color: #2dc26b;"><strong>Simple mode</strong></span> - Enforcers/blockers are always box-shaped</p>
<p dir="ltr"><span style="color: #f1c40f;"><strong>Advanced mode</strong></span> - Box/Cylinder/Sphere/Slab shapes</p>
<p dir="ltr"><span style="color: #ba372a;"><strong>Expert mode</strong></span> - Option to load external geometry as a blocker/enforcer</p>
<p dir="ltr">Support blockers and enforcers can be manipulated with the familiar Move, Rotate, and Scale tools. You can also quickly duplicate them with copy&amp;paste.</p>
<h3 dir="ltr">Support blocker</h3>
<p dir="ltr">Support blockers are useful when you’re generally happy with the automatic supports and you simply want to remove some of them. Focus on placing blockers where the supports meet the object, the rest of the support structure below will be removed automatically.</p>
<h3 dir="ltr">Support enforcers</h3>
<p dir="ltr">Support enforcers are great in situations, where only a few parts of the object need to be supported, but the automatic algorithm places supports all over the model. In this situation, don’t forget to switch the support mode to For support enforcers only. </p>
<p dir="ltr">It’s less common, but you can also use support enforcers with the automatic generation on.</p>
<p dir="ltr">Another interesting use of support enforcers is to split long bridges into smaller ones by placing a support in the middle of the bridge. You can repeat this process and print shorter, near-perfect bridges while still making the supports easy to remove.</p>
<div class="note-callout">Some options will only appear when <a href="http://help.prusa3d.com/article/simple-advanced-expert-modes_1765">Expert mode</a> is selected.</div>
<h3 dir="ltr"><strong>Generate support material</strong></h3>
<p dir="ltr">Supports are disabled unless a model has an overwrite for this setting</p>
<h3 dir="ltr"><strong>Auto-generated supports</strong></h3>
<p dir="ltr">When off, the overhang detection is off. Only support enforcers generate supports.</p>
<h3 dir="ltr"><strong>Overhang threshold</strong></h3>
<p dir="ltr">The Overhang threshold value represents the most horizontal slope (measured from the horizontal plane) that you can print without support material (90=vertical).</p>
<p dir="ltr">Changing this value is a quick way to adjust the amount of generated supports.</p>
<p dir="ltr">The lower the value, the less support will be generated.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/support_overhang_threshold.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/support_overhang_threshold-300x171.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/support_overhang_threshold-600x342.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/support_overhang_threshold-768x437.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/support_overhang_threshold-800x455.png 800w" alt="" /></p>
<ol>
<li dir="ltr" role="presentation">The Overhang threshold value and how it's measured</li>
<li dir="ltr" role="presentation">Overhang threshold 55</li>
<li dir="ltr" role="presentation">Overhang threshold 35</li>
<li dir="ltr" role="presentation">Overhang threshold 15</li>
</ol>
<h3 dir="ltr"><strong>Enforce support for the first</strong></h3>
<p dir="ltr">Generate support material for the specified number of layers counting from the bottom, regardless of whether normal support material is enabled or not and regardless of any angle threshold. This is useful for getting more adhesion of objects having a very thin or poor footprint on the build plate.</p>
<p dir="ltr" style="text-align: center;"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/enforce_for_layers.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/enforce_for_layers-300x204.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/enforce_for_layers-587x400.jpg 587w, https://cdn.help.prusa3d.com/wp-content/uploads/enforce_for_layers-768x523.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/enforce_for_layers-800x545.jpg 800w" alt="" /><em>Enforce support for the first 100 layers</em></p>
<h3 dir="ltr"><strong>Raft layers</strong></h3>
<p dir="ltr">The object will be raised by this number of layers and support material will be generated under it. When the print finishes, you can grab the raft and peel it away from the part.</p>
<h3 dir="ltr">Raft contact Z distance</h3>
<p>The vertical distance between the raft and the object. Ignored for soluble interfaces.</p>
<h3>Raft expansion</h3>
<p>Expansion of the raft in the XY plane for better stability.</p>
<h3>Style</h3>
<p>Style and shape of supports. The default <strong>Grid</strong> supports have a very well-defined minimum area, making them very stable. However, they tend to leak out of regions they support along the walls of the object. The <strong>Snug</strong> supports maintain the shape of the overhang, so they do not leak to the walls. The trade-off is the possibility of lower stability of tall and thin support pillars.</p>
<p><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid-600x190.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid-800x253.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid-300x95.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid-768x243.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid-1536x485.jpg 1536w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid-2048x647.jpg 2048w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/01/snug_vs_grid.jpg 1600w" alt="" width="1847" height="584" loading="lazy" /></p>
<p style="text-align: center;"><em>Grid supports (left), Snug supports (right)</em></p>
<p><a href="https://help.prusa3d.com/article/organic-supports_480131"><strong>Organic supports</strong></a> offer a completely different approach to supporting overhanging areas. Branches of support structures grow from the sides and automatically get denser beneath parts that need the support. The Organic supports are easily removable, do not scar the surface, and are fast and cheap to print.</p>
<figure class="image" style="text-align: center;"><img decoding="async" title="Support material" src="https://cdn.help.prusa3d.com/wp-content/uploads/2023/07/30cd916294dd7ac737ac7c09e1edfbb9.jpg" alt="" width="2011" height="1119" loading="lazy" /><figcaption>Grid supports (left), Organic supports (right)</figcaption></figure>
<h3 dir="ltr"><strong>Top contact Z distance</strong></h3>
<p dir="ltr">The vertical distance between the object and the support material interface.</p>
<p dir="ltr">Setting this to 0 will prevent PrusaSlicer from using bridge flow and speed for the first object layer.</p>
<p dir="ltr">Values between 50-75% of the layer height seem to work well.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/contact_z_distance.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/contact_z_distance-300x191.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/contact_z_distance-600x381.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/contact_z_distance-768x488.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/contact_z_distance-800x508.jpg 800w" alt="" /></p>
<h3 dir="ltr">Bottom contact Z distance</h3>
<p>Similar to Top contact Z distance, but affecting the gap at the bottom of the support tower (when supports start on top of a model and not on the build plate).</p>
<h3 dir="ltr"><strong>Pattern</strong></h3>
<p dir="ltr">Rectilinear - default, usually the easiest to remove</p>
<p dir="ltr">Rectilinear grid - sturdier and less prone to breaking during printing compared to rectilinear infill, harder to remove</p>
<p dir="ltr">Honeycomb - sturdy, somewhat difficult to remove</p>
<h3 dir="ltr"><strong>With sheath around the support</strong></h3>
<p dir="ltr">Creates a single perimeter around the supports, which makes them sturdier, but more difficult to remove.</p>
<h3 dir="ltr"><strong>Pattern spacing</strong></h3>
<p dir="ltr">Spacing between support material lines. Increase to make support removal easier. Support interface layers bridge over support material lines, if you increase this value too much, these bridges will start to sag and have an imperfect connection with the model.</p>
<p dir="ltr">The pattern spacing also sets the internal resolution of PrusaSlicer's supports grid. If you're using Paint-on supports or Support enforcers and you're unable to force supports exactly where you want them to be, try lowering the pattern spacing to get more resolution.</p>
<h3 dir="ltr"><strong>Pattern angle</strong></h3>
<p dir="ltr">Rotates infill pattern angle on the horizontal plane.</p>
<h3 dir="ltr">Closing radius</h3>
<p>For Snug supports only. Gaps smaller than the closing radius will be filled in.</p>
<h3 dir="ltr"><strong>Top interface layers</strong></h3>
<p dir="ltr">Interface layers form a more uniform surface between the object and the support material. These are preferably set to a much denser pattern than the non-interface layers so that you can both maximize the surface area of the support in contact with the model to prevent sagging while minimizing print time and material used with a bigger non-interface pattern spacing.</p>
<h3 dir="ltr">Bottom interface layers</h3>
<p>Similar as Top interface layers, but affecting the number of interface layers at the bottom of the support tower (when supports start on top of a model and not on the build plate).</p>
<h3 dir="ltr"><strong>Interface pattern spacing</strong></h3>
<p dir="ltr">Spacing between interface lines. Set to 0 to get a solid interface.</p>
<h3 dir="ltr"><strong>Interface loops</strong></h3>
<p dir="ltr">When enabled, the top layer of supports is covered with loops - continuous polylines.</p>
<h3 dir="ltr"><strong>Support on build plate only</strong></h3>
<p dir="ltr">Supports can start only on the print bed. Enabling this option is a really quick way to get rid of excess supports mostly on organic shapes. Make sure to check the preview and verify that all parts are either supported or at an overhang angle manageable by the printer.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/supports_build_plate_only.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/supports_build_plate_only-300x178.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/supports_build_plate_only-600x356.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/supports_build_plate_only-768x455.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/supports_build_plate_only-800x474.png 800w" alt="" /></p>
<p dir="ltr" style="text-align: center;"><em>Supports everywhere (left) vs Supports on build plate only (right)</em></p>
<h3 dir="ltr"><strong>XY separation between an object and its support</strong></h3>
<p dir="ltr">Sets the width of a gap between the model and supports. Bigger XY separation decreases the contact area of supports but makes them easier to remove and less prone to fusing to the model.</p>
<p dir="ltr">If expressed as a percentage (for example 150%) it will be calculated over the external perimeter width.</p>
<p dir="ltr"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/XY_seperation-1.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/XY_seperation-1-300x151.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/XY_seperation-1-600x301.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/XY_seperation-1-768x386.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/XY_seperation-1-800x402.jpg 800w" alt="" /></p>
<h3 dir="ltr"><strong>Don’t support bridges</strong></h3>
<p dir="ltr">Prevents support material from being generated under bridged areas.</p>
<h3 dir="ltr"><strong>Synchronize with object layers</strong></h3>
<p dir="ltr">Supports will be printed at equal layer heights as the model itself. This is useful with multi-material printers, where the extruder switch is expensive.</p>
<p>Synchronize with object layers can only be enabled with soluble supports (contact Z distance 0). </p>
<p>Not synchronizing with object layers allows the support layers to grow faster than the object layers (if not excessively slowed down by the cooling logic) and independent layer height also allows PrusaSlicer to follow the gap between the object and the support top surface precisely. We may consider this to be configurable even for non-soluble supports in the future.</p>
<p> </p>


Support material

<p dir="ltr">The main purpose of infill is to provide internal support for top layers, which would otherwise have to bridge over empty space. Infill also affects the speed of printing, structural strength, filament consumption, and even the look of the printed object.</p>
<div class="note-callout">Some options will only appear when <a href="http://help.prusa3d.com/article/simple-advanced-expert-modes_1765">Expert mode</a> is selected.</div>
<h3>Fill density</h3>
<p>Most models can be printed with 10-15% infill. If the top of the model closes gradually, it can be printed hollow (0% infill), though we generally do not recommend it. If you need the model to be heavier, want more compression resistance or higher stiffness, you can increase the infill. You'll rarely need infill higher than 30%. Finally, you can print the model with 100% infill and the infill pattern will be forced to rectilinear. Keep in mind that 100% infill can have a negative impact on the look of the printed object.</p>
<div class="tip-callout"><strong>Increasing model strength</strong><br />The strength of a model is mostly defined by the number of <strong>perimeters (not infill</strong>). If you want to have a stronger print, increase the number of perimeters. That said, infill does help with compression resistance.</div>
<h3>Fill pattern</h3>
<p>PrusaSlicer offers many infill patterns to choose from - check the dedicated <a href="http://help.prusa3d.com/article/infill-patterns_177130"><strong>Infill pattern documentation page</a></strong>.</p>
<h3>Length of the infill anchor</h3>
<p>The infill is usually <strong>connected to the perimeters</strong> with a so-called anchor, which is a <strong>short line</strong> of another (inner) perimeter that turns into an infill line. This makes the infill sturdier and is required by some materials (namely PETG) to stabilize the extrusion flow at the start of an infill line.</p>
<p>The length of the infill anchor value sets how many millimeters of this anchor will connect the infill and the perimeters. If you set this value to 0, the infill will be printed independently on the perimeters. Set a higher value to print the anchor that will continue as the infill itself.</p>
<p>If expressed as a percentage (15%) it will be calculated over the infill extrusion width.</p>
<p><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/7a35a3b708029b4e_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/7a35a3b708029b4e_painted-600x334.jpeg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/7a35a3b708029b4e_painted-800x445.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/7a35a3b708029b4e_painted-300x167.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/7a35a3b708029b4e_painted-768x427.jpeg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/01/7a35a3b708029b4e_painted-1536x854.jpeg 1536w" alt="" /></p>
<h3>Maximum length of the infill anchor</h3>
<p>This value sets the maximum length of the infill anchor connecting the infill with perimeters.</p>
<p>Set this parameter to 0 to disable anchoring completely.</p>
<h3>Top fill pattern</h3>
<p>You can pick a custom infill pattern that only affects the top visible layer, not adjacent solid layers below. </p>
<h3>Bottom fill pattern</h3>
<p>You can pick a custom infill pattern that only affects the bottom visible layer, not adjacent solid layers above.</p>
<h3>Combine infill every X layers</h3>
<p>Different layer heights will be used for infill and for perimeters in order to speed up the print without sacrificing the print quality.<br />Example: Combine infill every 3 layers, layer height 0.1 mm, infill will be printed at 0.3 mm layer height.</p>
<div class="note-callout">The maximum layer height is limited by your nozzle diameter. If you try to combine infill every 1+ layers with 0.4 mm nozzle and 0.3 mm layer height, no change will actually happen because you cannot print layers bigger than (about) 0.32mm (80% of nozzle diameter).</div>
<div><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/combine_every-01.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/combine_every-01-300x169.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/combine_every-01-600x337.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/combine_every-01-768x432.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/combine_every-01-800x450.png 800w" alt="" width="699" height="393" loading="lazy" /></div>
<div style="text-align: center;"><em>Infill (grey) printed at double the layer height of perimeters (orange)</em></div>
<p style="text-align: center;"> </p>
<h3>Solid Infill every X layers</h3>
<p>This feature allows you to force a solid layer after every given number of layers. This can be useful to increase the strength of the printed part, however other options, such as increasing the number of perimeters or infill percentage are preferred. Another application would be to create separate internal cells in order to increase thermal insulation.</p>
<p><strong>Set to 0 to disable.</strong></p>
<h3>Fill angle</h3>
<p>Default angle for infill orientation. Cross-hatching will be applied to some infill patterns.</p>
<div class="note-callout"><strong>Bridges</strong> will be printed using the best direction PrusaSlicer can detect, so this setting does not affect them.</div>
<h3>Solid infill threshold area</h3>
<p>Force solid infill for regions having a smaller area than the specified threshold.</p>
<p><strong>Set to 0 to disable.</strong></p>
<p style="text-align: center;"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/solid_infill_threshold.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/solid_infill_threshold-300x92.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/solid_infill_threshold-600x184.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/solid_infill_threshold-768x236.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/solid_infill_threshold-800x246.png 800w" alt="" /><em>Solid infill threshold 0 (left), 15 (middle), 100 (right)</em></p>


Infill

Original Prusa SL1 3D printer is based on the MSLA printing process. Unlike Original Prusa i3 machines, this printer uses a high-resolution LCD panel and a UV LED to cure thin layers of resin to achieve an unprecedented level of detail.

Original Prusa SL1 kit assembly

Assembly manuals

Basic calibration

What to do when the printer reports an error message during calibration.

Calibration Error Messages

All information you need to know to learn how to calibrate your 3D printer to achieve perfect prints.

Calibration

Printer description

Printer features

FAQs and other useful information you might be interested in before or after making your purchase at shop.prusa3d.com

General Information

Basic overview of your 3D printer and it's features, plus general Prusa Research info.

About your printer

3D models

Material guide

Slicing

Printer maintenance

Prusa Connect & PrusaLink

In this section, you can find material guides, printer troubleshooting and general info about using your printer.

Using the printer

Print Quality Troubleshooting

QR Error codes

Printer troubleshooting

Print Error Messages

Description of how to recognize and solve common problems, especially hardware and electronics related.

Troubleshooting

About PrusaSlicer

Configuration and profiles

User interface

Input/output

Left toolbar

Top toolbar

Print settings

Printer settings

Advanced features

SLA slicing

Other (PrusaSlicer)

The official documentation for the PrusaSlicer slicing software. From basic configuration to advanced settings like modifier meshes.

PrusaSlicer

1. Introduction

2. Base & Tower

3. Covers & Platform

4. Electronics & Lid

5. Preflight check

Manual changelog SL1

<p>This is an advanced system for displaying error screens, providing more useful information to the user. In case of an issue, the printer will display the name of the error followed by a brief description and a QR code. Take your phone, scan the code, and you will be immediately redirected to an article that will explain in detail what happened to your printer and how to fix the problem.</p>
<p>You can see the printers that show the QR code in our <a href="https://github.com/prusa3d/Prusa-Error-Codes">GitHub page</a>. Note that older firmware versions may have different looks.</p>
<table style="border-collapse: collapse; width: 100.026%;" border="0">
<tbody>
<tr>
<td style="width: 32.1716%;"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2024/09/a8eb010a2d9a57fbc9c69b36b0477893.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="QR Error codes REVIEW" alt="" width="225" height="300" loading="lazy" /></td>
<td style="width: 67.8023%;"><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2024/09/b7e7fce178235ca5a553c4ff07e83c65.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="QR Error codes REVIEW" alt="" width="500" height="300" loading="lazy" /></td>
</tr>
</tbody>
</table>
<h3>How to use the error code</h3>
<div>
<p>In case your printer displays the error screen, there are multiple ways to access the article:</p>
<ul>
<li>Scan the QR code from the printer screen using a phone or tablet</li>
<li>Use the link displayed on the screen (e.g. help.prusa3d.com/en/12201)</li>
<li>Open help.prusa3d.com and search for the error (e.g. 12201)</li>
</ul>
<p>Follow the article explaining what went wrong and how to fix the issue. Note that some errors might require you to replace broken part(s) of the printer. If a replacement is necessary, there will be a link to the service guide at the bottom of the article.</p>
<h3>Error code explained</h3>
<p>How is each code created? Let's use error #12201 again as an example. The code consists of five numbers with the following pattern: XXYZZ</p>
<table class="striped">
<tbody>
<tr style="height: 18.4px;">
<td style="width: 48.8442%; text-align: center; height: 18.4px;"><strong># XXYZZ</strong></td>
<td style="width: 48.8442%; text-align: center; height: 18.4px;"><strong><a href="http://help.prusa3d.com/article/preheat-error-bed-12201-mini_112444">Heating failed bed #12201 (MINI)</a></strong></td>
</tr>
<tr style="height: 119.2px;">
<td style="width: 48.8442%; height: 119.2px;">
<p>XX - ID number of the printer, according to USB PID</p>
<p>Y - Error category (common for all printers)</p>
<p>ZZ - ID number for the specific error</p>
</td>
<td style="width: 48.8442%; height: 119.2px;">
<p>12 - Printer number 12: Original Prusa MINI</p>
<p>2 - Error category: Temperature error</p>
<p>01 - Specific error code: Heatbed heating failed</p>
</td>
</tr>
</tbody>
</table>
</div>
<div>
<h3>Device hash</h3>
<p>The URL link embedded in the QR code may contain an optional “device hash”. This can be disabled in the MINI+ in <em>Settings</em>, and in the SL1 in <em>Settings -&gt; Settings</em> <em>and Sensors</em>, on the MK4 and XL printers in <em>Settings -&gt; System</em>. Including this information enables us to check whether you are running the latest version of firmware, and if not, we will inform you at the top of the article. The information provided in the URL is stored in our database to help us better understand which errors are the most common and how many errors each printer experienced.</p>
</div>
<p>The device hash cannot be used to recover anything sensitive like a serial number and isn’t used for anything else than the QR codes feature therefore there are absolutely no security concerns. This feature is turned ON by default. In case you don't want to use this enhanced feature, you can switch it off in the printer's menu by setting the “Device hash in QR” to OFF.</p>
<p>Once you turn it off, the QR code URL will contain only the following: https://help.prusa3d.com/en/12201/</p>
<table class="striped">
<tbody>
<tr style="height: 18px;">
<td style="width: 30.8567%; height: 18px;"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/MINI_device_hash_toggle_upscaled.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/MINI_device_hash_toggle_upscaled-300x400.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/MINI_device_hash_toggle_upscaled-450x600.jpg 450w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/MINI_device_hash_toggle_upscaled-225x300.jpg 225w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/MINI_device_hash_toggle_upscaled-768x1024.jpg 768w" alt="" width="250" height="333" loading="lazy" /></td>
<td style="width: 66.8317%; height: 18px;"><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-Setting-and-sensors.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-Setting-and-sensors-600x360.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-Setting-and-sensors-800x480.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-Setting-and-sensors-300x180.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-Setting-and-sensors-768x461.jpg 768w" alt="" width="600" height="360" loading="lazy" /></td>
</tr>
</tbody>
</table>
<p style="text-align: center;"><em>Device hash toggle for MINI on the left and SL1 on the right.</em></p>


<div class="warning-callout"><strong>This error was changed in firmware version 1.5.0! This article only applies to SL1 printers with firmware older than 1.5.0.</strong></div>
<p>During the Wizard, the SL1 will test the tilting-motion of the print display and resin vat (tank). In case the message <strong>"Please check if the tilting mechanism can move smoothly in its entire range"</strong> appears, the connecting rod cannot move as it should. This could be caused by something obstructing the movement of the tilt-platform or the mechanism not being installed correctly. Follow the steps below to troubleshoot the issue.</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/screenshot-error-2020-01-12-48-1-300x180.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/screenshot-error-2020-01-12-48-1-600x360.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/screenshot-error-2020-01-12-48-1-768x461.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/screenshot-error-2020-01-12-48-1-800x480.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/screenshot-error-2020-01-12-48-1.png" data-hd-height="350px" data-hd-align="center"></p>
<div class="note-callout">Before anything else, check that the tilt-platform does not have anything blocking its movements, like debris or forgotten tools, stuck between the sides of the screen and the tilt mechanism.</div>
<h3>Disassembly and correction.</h3>
<ol>
<li>Open the eight M3x5b screws securing the cover. <strong>Be careful to unplug the USB &amp; Power-cable before removing the cover completely.</strong></li>
</ol>
<table>
<tbody>
<tr>
<td>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
</tr>
</tbody>
</table>
<ol start="2">
<li style="counter-increment: li 2;">Remove the M4x10 screw holding the right side of the touch screen. It is not necessary to remove the left screw. Just loosen it about a half-turn and you can slide the screen out, like a door. This will give you access to the motor and connecting rod.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Be very careful with the touch screen flat cable. It is fragile and can be easily damaged or cut.</div>
<ol start="3">
<li style="counter-increment: li 2;">Remove the M3nN-nut from the screw that connects the tilt-mechanism and the connecting rod. You can do that by using a spanner or pliers to hold the nut and an Allen key to unscrew from the other side.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="4">
<li style="counter-increment: li 3;">Remove the two M4x8 screws securing the tilt-motor holder to the bottom plate.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="5">
<li style="counter-increment: li 4;">Remove the motor-holder and the connecting-rod from the tilt mechanism.</li>
<li>Go to <a href="http://help.prusa3d.com/guide/2-base-tower_8544#9384">Step 18</a> of <a href="http://help.prusa3d.com/guide/2-base-tower_8544">2. Base & Tower</a> of the assembly guide, and remake the connection of the connecting rod and the motor shaft.</li>
</ol>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07.png" data-hd-height="350px" data-hd-align="center"></p>
<div class="tip-callout">Pay extra attention to this step, as not aligning the connecting rod with the protrusion on the holder as instructed will cause the issue again.</div>
<ol start="7">
<li style="counter-increment: li 6;">Reassemble first the tilt to the connecting rod, make sure that after tightening the nut the two parts are in contact.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-533x400.png 533w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Do not over-tighten the nut!</div>
<ol start="8">
<li style="counter-increment: li 7;">Connect the motor holder to the bottom plate using the M4x8 screws.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="9">
<li style="counter-increment: li 8;">Make sure that the optical sensor cable has its correct end connected to the sensor. The middle wire should be blue. In case the middle wire on the sensor connector is black, the connection will need to be swapped.</li>
<li>Move the connecting-rod manually and see if it moves smoothly until the blade sensor-trigger is between the two sides of the sensor.</li>
</ol>
<div class="tip-callout">Make sure the sensor is secured!</div>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-261x300.png 261w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-348x400.png 348w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-522x600.png 522w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="11">
<li style="counter-increment: li 10;">Slide the LCD back to its place, and tighten both M4x10 screws holding it.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 200px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="200px" data-hd-align="center"></p>
<ol start="12">
<li style="counter-increment: li 11;">Connect the USB and Power cable and close the eight M3x5b screws that hold the cover. Tighten them in diagonally at first, and add all the screws before tightening them. Pay attention to the cables from the electronics so that they are not pinched.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="13">
<li style="counter-increment: li 12;">Run the wizard again.</li>
</ol>
<p>&nbsp;</p>
<p style="text-align: center;"><strong>After the wizard finishes, you are ready to calibrate the SL1.</strong></p>


SL1 Tilt-mechanism error

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Tilt homing failed, check its surroundings, and repeat the action</strong>.</p>
<p>Error name: Tilt homing failed</p>
<p>Error code: #10101</p>
<p>Issued when the printer has a mechanical failure when trying to move the tilt mechanism.</p>
<h3>How to fix it?</h3>
<p>The inability to home the tilt might indicate that there is a physical block of the tilt mechanism or an assembly error in the motor and the connecting rod. Please follow these steps to check the tilt assembly.</p>
<ol>
<li>Open the eight M3x5b screws securing the cover. <strong>Be careful to unplug the USB &amp; Power-cable before removing the cover completely.</strong></li>
</ol>
<table>
<tbody>
<tr>
<td>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
</tr>
</tbody>
</table>
<ol start="2">
<li style="counter-increment: li 2;">Remove the M4x10 screw holding the right side of the touch screen. It is not necessary to remove the left screw. Just loosen it about a half-turn and you can slide the screen out, like a door. This will give you access to the motor and connecting rod.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Be very careful with the touch screen flat cable. It is fragile and can be easily damaged or cut.</div>
<ol start="3">
<li>Move the connecting rod with your hands and see if it has a full range of motion and if the blade sensor-trigger is between the two sides of the sensor. If so, jump to step 12. If any resistance is found, continue with the next step.</li>
</ol>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-533x400.jpeg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-800x600.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-300x225.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-768x576.jpeg 768w" alt="" width="338" height="254"></p>
<ol start="4">
<li style="counter-increment: li 2;">Remove the M3nN-nut from the screw that connects the tilt-mechanism and the connecting rod. You can do that by using a spanner or pliers to hold the nut and an Allen key to unscrew from the other side.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-768x576.png 768w" data-hd-height="250px" data-hd-align="center"></p>
<ol start="5">
<li style="counter-increment: li 3;">Remove the two M4x8 screws securing the tilt-motor holder to the bottom plate.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-800x600.png 800w" data-hd-height="250px" data-hd-align="center"></p>
<ol start="6">
<li style="counter-increment: li 4;">Remove the motor-holder and the connecting-rod from the tilt mechanism.</li>
<li>Go to <a href="http://help.prusa3d.com/guide/2-base-tower_8544#9384">Step 18</a> of <a href="http://help.prusa3d.com/guide/2-base-tower_8544">2. Base & Tower</a> of the assembly guide, and remake the connection of the connecting rod and the motor shaft.</li>
</ol>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07.png" data-hd-height="350px" data-hd-align="center"></p>
<div class="tip-callout">Pay extra attention to this step, as not aligning the connecting rod with the protrusion on the holder as instructed will cause the issue again.</div>
<ol start="8">
<li style="counter-increment: li 6;">Reassemble first the tilt to the connecting rod, make sure that after tightening the nut the two parts are in contact.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-533x400.png 533w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Do not over-tighten the nut!</div>
<ol start="9">
<li style="counter-increment: li 7;">Connect the motor holder to the bottom plate using the M4x8 screws.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="10">
<li style="counter-increment: li 8;">Make sure that the optical sensor cable has its correct end connected to the sensor. The middle wire should be blue. In case the middle wire on the sensor connector is black, the connection will need to be swapped.</li>
<li>Move the connecting-rod manually and see if it moves smoothly until the blade sensor-trigger is between the two sides of the sensor.</li>
</ol>
<div class="tip-callout">Make sure the sensor is secured!</div>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-261x300.png 261w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-348x400.png 348w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-522x600.png 522w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="12">
<li style="counter-increment: li 10;">Slide the LCD back to its place, and tighten both M4x10 screws holding it.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 200px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="200px" data-hd-align="center"></p>
<ol start="13">
<li style="counter-increment: li 11;">Connect the USB and Power cable and close the eight M3x5b screws that hold the cover. Tighten them diagonally at first, and add all the screws before tightening them. Pay attention to the cables from the electronics so that they are not pinched.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="14">
<li style="counter-increment: li 12;">Run the wizard again.</li>
</ol>
<p>&nbsp;</p>


Tilt homing failed #10101 (SL1/SL1S)

<p>When first turning on your SL1 printer, or after a <a href="http://help.prusa3d.com/article/factory-reset-sl1-sl1s_177524">factory reset</a>, the printer will ask to start the selftest. You can also start the Selftest in the printer menu in <em>Settings -&gt; Calibration -&gt; Wizard</em>. The selftest checks the most important functions of the printer.</p>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-settings-calibration-3.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-settings-calibration-3-600x360.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-settings-calibration-3-800x480.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-settings-calibration-3-300x180.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/SL1-settings-calibration-3-768x461.jpg 768w" alt="" width="600" height="360"></p>
<h3>Selftest procedure checks</h3>
<ol>
<li><strong>Tank</strong> home check</li>
<li><strong>Tower</strong> home check</li>
<li><strong>UV led</strong> check</li>
<li><strong>Fans</strong> check</li>
<li><strong>Display</strong> test</li>
<li><strong>Tower</strong> axis check</li>
<li><strong>Resin sensor</strong> check</li>
<li>Set timezone</li>
<li>Sound test</li>
</ol>
<div class="tip-callout">If any issue is found on the Selftest, a screen with the error will appear with a <a href="http://help.prusa3d.com/article/qr-error-codes_176114">QR code</a> that will lead you to a troubleshooting guide.</div>
<h3>Tank home check</h3>
<p>The tank home check will start the selftest by checking the tilt for movement and if it can find the homing position. Any error in this process can generate the following message:</p>
<p><a href="http://help.prusa3d.com/article/tilt-homing-failed-10101-sl1-sl1s_165754">Tilt homing failed</a></p>
<p><a href="http://help.prusa3d.com/article/tower-check-failed-10118-sl1-sl1s_177080">Tilt check failed</a></p>
<p><a href="http://help.prusa3d.com/article/tilt-endstop-not-reached-10115-sl1-sl1s_176637">Tilt endstop not reached</a></p>
<p><a href="http://help.prusa3d.com/article/invalid-tilt-align-position-10121-sl1-sl1s_196077">Tilt position invalid</a></p>
<h3>Tower home check</h3>
<p>The tower is also checked for the range of movement and home position. Any error in this process can generate the following messages:</p>
<p><a href="http://help.prusa3d.com/article/tower-homing-failed-10102-sl1-sl1s_167793">Tower homing failed</a></p>
<p><a href="http://help.prusa3d.com/article/tower-moving-failed-10103-sl1-sl1s_168521">Tower moving failed</a></p>
<p><a href="http://help.prusa3d.com/article/tower-position-error-10123-sl1-sl1s_177122">Tower position error</a></p>
<h3>UV LED check</h3>
<p>After the mechanical checks for the tank and the tower, the printer will ask you to unscrew and remove the tank and the print platform. The UV LED will be checked.</p>
<p><a href="http://help.prusa3d.com/article/temperature-sensor-failed-10205-sl1-sl1s_196016">Temperature sensor failed</a></p>
<h3>Fans check</h3>
<p>The SL1 has multiple fans. They are checked during the selftest, and if one of them has something blocking it, is not well connected, or has damage, the following errors can be presented, and in case this happens, the fan will be identified in the message:</p>
<p><a href="http://help.prusa3d.com/article/fan-failure-10106-sl1-sl1s_168530">Fan failure</a></p>
<p><a href="http://help.prusa3d.com/article/fan-rpm-not-in-range-10122-sl1-sl1s_196085">Fan RPM not in range</a></p>
<h3>Display test</h3>
<p>The printer will ask if you can see the Prusa sign from the top of the orange cover. <strong>Do not open the orange cover, there is a UV light inside, which will cause damage to your eyes.</strong> In case you click that you cannot see the logo, you will see the following message:</p>
<p><a href="http://help.prusa3d.com/article/display-test-failed-10120-sl1-sl1s_177108">Display test failed</a></p>
<h3>Tower axis check</h3>
<p>This step will check the tower axis for its full range of motion. In case there is an issue, one of the following messages might appear:</p>
<p><a href="http://help.prusa3d.com/article/tower-endstop-not-reached-10114-sl1-sl1s_176352">Tower endstop not reached</a></p>
<p><a href="http://help.prusa3d.com/article/tower-check-failed-10118-sl1-sl1s_177080">Tower check failed</a></p>
<h3>Resin sensor check</h3>
<p>After inserting the print platform at 60º, the resin sensor will be checked. In case the sensor is not found, the following error will be shown:</p>
<p><a href="http://help.prusa3d.com/article/resin-sensor-error-10307-sl1-sl1s_165786">Resin sensor error</a></p>
<h3>Set timezone</h3>
<p>At this step, you can set the timezone for your printer. The step is optional.</p>
<h3>Sound test</h3>
<p>The printer will play a sound, and if you click that you cannot hear it, the following message will appear:</p>
<p><a href="http://help.prusa3d.com/article/speaker-test-failed-10310-sl1-sl1s_167775">Speaker test failed</a></p>


Selftest (SL1)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Tower homing failed, make sure there is no obstacle in its path and repeat the action</strong><strong>.</strong></p>
<p>Error name: Tower homing failed</p>
<p>Error code: #10102</p>
<p>Issue when the printer has attempted to home the tower but has found resistance for moving the tower at the start of the calibration.</p>
<h3>How to fix it?</h3>
<h4>Inspect the assembly</h4>
<p>Make sure that the latest <a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">firmware</a> is installed. Check if the three screws indicated in the pictures below are tightened and not moving.</p>
<table style="border-collapse: collapse; width: 100%; height: 18px; border-style: hidden;" border="0">
<tbody>
<tr style="height: 18px;">
<td style="width: 48.8561%; height: 18px; border-style: solid;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-533x400.jpg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-800x600.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-300x225.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-768x576.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-1536x1152.jpg 1536w" alt="" width="400" height="300"></td>
<td style="width: 48.8561%; height: 18px; border-style: hidden;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/e65aed9db8ee8410_painted.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/e65aed9db8ee8410_painted-534x400.png 534w, https://cdn.help.prusa3d.com/wp-content/uploads/e65aed9db8ee8410_painted-300x225.png 300w" alt="" width="400" height="300"></td>
</tr>
</tbody>
</table>
<p>See if there is nothing physically blocking the movement of the tower. In case you cannot find anything blocking it, add a small amount of lubricant to the ball screw.</p>
<h4>Sensitivity settings</h4>
<p>In some edge cases, you must adjust the sensitivity of the platform axis. Navigate the menu to <em>Settings -&gt; Platform and resin tank</em>, and find the value for the <em>Platform Axis Sensitivity (<span style="color: #2dc26b;">green square</span>)</em>. <strong>The default value is Zero.</strong> If the selftest fails when homing the tower, then do the following:</p>
<ol>
<li>&nbsp;<strong>Make sure the value is set to 0 (zero)</strong> and re-run the calibration procedure. If it passes the selftest, then this is all you need to do. If not, see the next point.</li>
<li>&nbsp;If you get the same error, <strong>increase the sensitivity to +1</strong> and re-run the calibration procedure. If it passes the selftest, then this is all you need to do. If not, see the next point.</li>
<li>If you get the same error, <strong>increase the sensitivity to +2</strong> and re-run the calibration procedure. If it passes the selftest, then this is all you need to do. If not, see the next point.</li>
<li>If you get the same error, <strong>decrease the sensitivity to -1</strong> and re-run the calibration procedure. If it passes the selftest, then this is all you need to do.</li>
</ol>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted.png" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted-600x360.png 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted-800x480.png 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted-300x180.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted-768x461.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted-1536x922.png 1536w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/10/c6ab8e0be75eca80_painted.png 1600w" alt="" width="600" height="360"></p>

Tower homing failed #10102 (SL1/SL1S)

<h3>What happened?</h3>
<p><span data-sheets-formula-bar-text-style="font-size:13px;color:#000000;font-weight:normal;text-decoration:none;font-family:'Arial';font-style:normal;text-decoration-skip-ink:none;">The printer is displaying the message: <strong>RPM of (fan)s not in range. Check if the fan is connected correctly.</strong><br /></span></p>
<p>Error name: Fan RPM not in range</p>
<p>Error code: #10122</p>
<p>Issued if the RPM of any of the printer's fans is not within their limits of use when measured, during the calibration wizard.</p>
<h3>How to fix it?</h3>
<p><strong>The SL1 has three fans:</strong></p>
<ul>
<li><strong><span style="color: #843fa1;">The LED cooling fan (indicated in the picture by a purple arrow on the left).</span></strong></li>
<li><strong><span style="color: #169179;">The right blower fan (indicated in the picture by a green arrow in the middle).</span></strong></li>
<li><strong><span style="color: #236fa1;">The rear filter fan (indicated in the picture by a blue arrow on the right).</span></strong></li>
</ul>
<p>If the warning appears, please follow the maintenance steps for the fan that generated the issue: <a href="http://help.prusa3d.com/article/sl1-sl1s-maintenance_1951#fan-cleaning-removing-dust">SL1/SL1S maintenance</a>. When doing that, also check the cable connections of the fan to the mainboard.</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/07/3f898d99d9df618f_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/07/3f898d99d9df618f_painted-533x400.jpeg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/07/3f898d99d9df618f_painted-800x600.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/07/3f898d99d9df618f_painted-300x225.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/07/3f898d99d9df618f_painted-768x576.jpeg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/07/3f898d99d9df618f_painted-1536x1152.jpeg 1536w" alt="" width="600" height="450" loading="lazy" /></p>
<div class="note-callout">If the right blower fan is the one that showed the warning, make sure that the blower gasket is still in place.</div>
<p>Go to the printer menu in <em>LCD menu -&gt; Settings -&gt; Calibration -&gt; Wizard</em>. The printer will run the self-test. In case the fan also fails during the self-test, switch the connection of two of the fans, and see if the warning will be transferred to the new fan. If the error is transferred, the fan that had the warning originally may need to be replaced.</p>
<h3>Parts replacement guide(s)</h3>
<p><a href="http://help.prusa3d.com/guide/how-to-replace-a-blower-fan-sl1_127607">How to replace a blower fan (SL1)</a></p>

Fan RPM not in range #10122 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Failed to reach tilt endstop, please check that the cable is connected and repeat the action</strong>.</p>
<p>Error name: Tilt endstop not reached</p>
<p>Error code: #10115</p>
<p>Issued when the printer did not manage to move the connecting rod as it should.</p>
<h3>How to fix it?</h3>
<p>The inability to home the tilt might indicate that there is a physical block of the tilt mechanism or an assembly error in the motor and the connecting rod.</p>
<ol>
<li>Open the eight M3x5b screws securing the cover. <strong>Be careful to unplug the USB &amp; Power-cable before removing the cover completely.</strong></li>
</ol>
<table>
<tbody>
<tr>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
</tr>
</tbody>
</table>
<ol start="2">
<li style="counter-increment: li 2;">Remove the M4x10 screw holding the right side of the touch screen. It is not necessary to remove the left screw. Just loosen it about a half-turn and you can slide the screen out, like a door. This will give you access to the motor and connecting rod.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Be very careful with the touch screen flat cable. It is fragile and can be easily damaged or cut.</div>
<ol start="3">
<li>Move the connecting rod with your hands and see if it has a full range of motion and if the blade sensor-trigger is between the two sides of the sensor. If so, jump to step 12. If any resistance is found, continue with the next step.</li>
</ol>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-533x400.jpeg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-800x600.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-300x225.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-768x576.jpeg 768w" alt="" width="338" height="254"></p>
<ol start="4">
<li style="counter-increment: li 2;">Remove the M3nN-nut from the screw that connects the tilt-mechanism and the connecting rod. You can do that by using a spanner or pliers to hold the nut and an Allen key to unscrew from the other side.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-768x576.png 768w" data-hd-height="250px" data-hd-align="center"></p>
<ol start="5">
<li style="counter-increment: li 3;">Remove the two M4x8 screws securing the tilt-motor holder to the bottom plate.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-800x600.png 800w" data-hd-height="250px" data-hd-align="center"></p>
<ol start="6">
<li style="counter-increment: li 4;">Remove the motor-holder and the connecting-rod from the tilt mechanism.</li>
<li>Go to <a href="http://help.prusa3d.com/guide/2-base-tower_8544#9384">Step 18</a> of <a href="http://help.prusa3d.com/guide/2-base-tower_8544">2. Base & Tower</a> of the assembly guide, and remake the connection of the connecting rod and the motor shaft.</li>
</ol>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07.png" data-hd-height="350px" data-hd-align="center"></p>
<div class="tip-callout">Pay extra attention to this step, as not aligning the connecting rod with the protrusion on the holder as instructed will cause the issue again.</div>
<ol start="8">
<li style="counter-increment: li 6;">Reassemble first the tilt to the connecting rod, make sure that after tightening the nut the two parts are in contact.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-533x400.png 533w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Do not over-tighten the nut!</div>
<ol start="9">
<li style="counter-increment: li 7;">Connect the motor holder to the bottom plate using the M4x8 screws.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="10">
<li style="counter-increment: li 8;">Make sure that the optical sensor cable has its correct end connected to the sensor. The middle wire should be blue. In case the middle wire on the sensor connector is black, the connection will need to be swapped.</li>
<li>Move the connecting-rod manually and see if it moves smoothly until the blade sensor-trigger is between the two sides of the sensor.</li>
</ol>
<div class="tip-callout">Make sure the sensor is secured!</div>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-261x300.png 261w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-348x400.png 348w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-522x600.png 522w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="12">
<li style="counter-increment: li 10;">Slide the LCD back to its place, and tighten both M4x10 screws holding it.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 200px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="200px" data-hd-align="center"></p>
<ol start="13">
<li style="counter-increment: li 11;">Connect the USB and Power cable and close the eight M3x5b screws that hold the cover. Tighten them diagonally at first, and add all the screws before tightening them. Pay attention to the cables from the electronics so that they are not pinched.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="14">
<li style="counter-increment: li 12;">Run the wizard again.</li>
</ol>
<p>&nbsp;</p>


Tilt endstop not reached #10115 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>Speaker test failed, please check the connection and repeat the action.</strong></p>
<p>Error name: Speaker test failed</p>
<p>Error code: #10310</p>
<p>The speaker test will play the user a sound that is confirmed by user-input. If the sound is played by the test, and you select you did not hear it, it will give this error.</p>
<h3>How to fix it?</h3>
<p>Make sure the connector is well seated using the guide below and polarity is correct (Red on the Right, by the +).</p>
<p>Also inspect the speaker, found at the back of the Touch Screen, whether its wires are secure, and no solder pads have come loose.</p>
<h3>Replacement guide(s)</h3>
<p><a href="http://help.prusa3d.com/article/saving-log-file-sl1-sl1s_142334">Saving log file (SL1/SL1S)</a></p>


Speaker test failed #10310 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Requested intensity cannot be reached by max. allowed PWM</strong></p>
<p>Error name: UV intensity too low</p>
<p>Error code: #10318</p>
<p>The most probable reason for this error is either the print display or UV LED set. Either the LEDs do not produce enough light, or the print display is blocking too much light.</p>
<h3>How to fix it?</h3>
<h4>Faulty print display or UV LED panel</h4>
<p>Check whether the UV panel and LCD screen work as intended – Run the Display test, found at <em>Settings -&gt; Calibration -&gt; Display test</em> (purple square)<em>.</em> Follow the onscreen instructions.</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/868f032dfb27b102_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/868f032dfb27b102_painted-600x360.jpeg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/868f032dfb27b102_painted-800x480.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/868f032dfb27b102_painted-300x180.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/868f032dfb27b102_painted-768x461.jpeg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/868f032dfb27b102_painted-1536x922.jpeg 1536w" alt="" width="600" height="360" loading="lazy" /></p>
<p>Check if the logo appears on the display as below. If there are "holes" in the image, the print display must be replaced.</p>
<p><img decoding="async" src="https://cdn.help.prusa3d.com/wp-content/uploads/testLCDSl1.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/testLCDSl1-300x169.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/testLCDSl1-600x338.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/testLCDSl1-768x432.jpg 768w" alt="" /></p>
<p>If it remains completely, it may have a faulty UV LED panel. Check its wiring by unplugging it and plugging it back in, making sure the connector is seated properly. Test the display again and if it still does not work it will have to be replaced.</p>
<h3>Guides</h3>
<p>See our guide for <a href="http://help.prusa3d.com/guide/how-to-replace-the-print-display-sl1_133295">replacing the print display</a>.</p>


UV intensity too low #10318 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Tilt axis check failed! Check if the tilt can move smoothly in its entire range.</strong></p>
<p>Error name: Tilt check failed</p>
<p>Error code: #10119</p>
<p>The inability to home the tilt might indicate that the tilt movement cannot be detected.&nbsp;</p>
<h3>How to fix it?</h3>
<p>Use the steps below to check the tilt mechanism.</p>
<ol>
<li>Open the eight M3x5b screws securing the cover. <strong>Be careful to unplug the USB &amp; Power-cable before removing the cover completely.</strong></li>
</ol>
<table>
<tbody>
<tr>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03.png" data-hd-height="350px" data-hd-align="center"></p>
</td>
</tr>
</tbody>
</table>
<ol start="2">
<li style="counter-increment: li 2;">Remove the M4x10 screw holding the right side of the touch screen. It is not necessary to remove the left screw. Just loosen it about a half-turn and you can slide the screen out, like a door. This will give you access to the motor and connecting rod.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Be very careful with the touch screen flat cable. It is fragile and can be easily damaged or cut.</div>
<ol start="3">
<li>Move the connecting rod with your hands and see if it has a full range of motion and if the blade sensor-trigger is between the two sides of the sensor. If so, jump to step 12. If any resistance is found, continue with the next step.</li>
</ol>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-533x400.jpeg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-800x600.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-300x225.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-768x576.jpeg 768w" alt="" width="338" height="254"></p>
<ol start="4">
<li style="counter-increment: li 2;">Remove the M3nN-nut from the screw that connects the tilt-mechanism and the connecting rod. You can do that by using a spanner or pliers to hold the nut and an Allen key to unscrew from the other side.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-768x576.png 768w" data-hd-height="250px" data-hd-align="center"></p>
<ol start="5">
<li style="counter-increment: li 3;">Remove the two M4x8 screws securing the tilt-motor holder to the bottom plate.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-800x600.png 800w" data-hd-height="250px" data-hd-align="center"></p>
<ol start="6">
<li style="counter-increment: li 4;">Remove the motor-holder and the connecting-rod from the tilt mechanism.</li>
<li>Go to <a href="http://help.prusa3d.com/guide/2-base-tower_8544#9384">Step 18</a> of <a href="http://help.prusa3d.com/guide/2-base-tower_8544">2. Base & Tower</a> of the assembly guide, and remake the connection of the connecting rod and the motor shaft.</li>
</ol>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07.png" data-hd-height="350px" data-hd-align="center"></p>
<div class="tip-callout">Pay extra attention to this step, as not aligning the connecting rod with the protrusion on the holder as instructed will cause the issue again.</div>
<ol start="8">
<li style="counter-increment: li 6;">Reassemble first the tilt to the connecting rod, make sure that after tightening the nut the two parts are in contact.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-533x400.png 533w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05.png" data-hd-height="250px" data-hd-align="center"></p>
<div class="warning-callout">Do not over-tighten the nut!</div>
<ol start="9">
<li style="counter-increment: li 7;">Connect the motor holder to the bottom plate using the M4x8 screws.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="10">
<li style="counter-increment: li 8;">Make sure that the optical sensor cable has its correct end connected to the sensor. The middle wire should be blue. In case the middle wire on the sensor connector is black, the connection will need to be swapped.</li>
<li>Move the connecting-rod manually and see if it moves smoothly until the blade sensor-trigger is between the two sides of the sensor.</li>
</ol>
<div class="tip-callout">Make sure the sensor is secured!</div>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-261x300.png 261w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-348x400.png 348w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-522x600.png 522w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="12">
<li style="counter-increment: li 10;">Slide the LCD back to its place, and tighten both M4x10 screws holding it.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 200px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="200px" data-hd-align="center"></p>
<ol start="13">
<li style="counter-increment: li 11;">Connect the USB and Power cable and close the eight M3x5b screws that hold the cover. Tighten them diagonally at first, and add all the screws before tightening them. Pay attention to the cables from the electronics so that they are not pinched.</li>
</ol>
<p>&nbsp;</p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12.png" data-hd-height="250px" data-hd-align="center"></p>
<ol start="14">
<li style="counter-increment: li 12;">Run the wizard again.</li>
</ol>
<p>&nbsp;</p>


Tilt check failed #10119 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>Moving the tower failed. Make sure there is no obstacle in its path and repeat the action</strong>.</p>
<p>Error name: Tower moving failed</p>
<p>Error code: #10103</p>
<p>Issued when the printer has attempted to home the tower but has found resistance to move it.</p>
<h3>How to fix it?</h3>
<p>Make sure that the latest <a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">firmware</a> is installed. Check if the three screws indicated in the pictures below are tightened and not moving.</p>
<table style="border-collapse: collapse; width: 100%; height: 18px;" border="1">
<tbody>
<tr style="height: 18px;">
<td style="width: 48.8561%; height: 18px; border-style: hidden;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-533x400.jpg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-800x600.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-300x225.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-768x576.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/tower-screws-1536x1152.jpg 1536w" alt="" width="400" height="300"></td>
<td style="width: 48.8561%; height: 18px; border-style: hidden;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/e65aed9db8ee8410_painted.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/e65aed9db8ee8410_painted-534x400.png 534w, https://cdn.help.prusa3d.com/wp-content/uploads/e65aed9db8ee8410_painted-300x225.png 300w" alt="" width="400" height="300"></td>
</tr>
</tbody>
</table>
<p>See if there is nothing physically blocking the movement of the tower. In case you cannot find anything blocking it, add a small amount of super lube on the trapezoidal rod.</p>


Tower moving failed #10103 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>The printer is not UV calibrated, please connect the UV calibrator and run the procedure.</strong></p>
<p>Error name: P<span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;The printer is not UV calibrated, please connect the UV calibrator and run the procedure.&quot;}" data-sheets-userformat="{&quot;2&quot;:513,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0}">rinter is not UV calibrated</span></p>
<p>Error code: #10308</p>
<h3>How to fix it?</h3>
<p>When replacing the print display or A64 logic board, you must calibrate the UV LEDs using the calibrator. This error can also occur if the calibration process failed or was aborted. The calibration process is part of the replacement guide.</p>
<h3>How to replace faulty parts</h3>
<p><a href="http://help.prusa3d.com/guide/how-to-replace-the-print-display-sl1_133295">How to replace the print display (SL1)</a></p>
<p><a href="http://help.prusa3d.com/guide/how-to-replace-the-a64-board-sl1_151162">How to replace the A64 board (SL1)</a></p>
<p>&nbsp;</p>


Printer is not UV calibrated #10308 (SL1)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Failed to reach tower endstop, please check that the tower motor is connected and repeat the action</strong>.</p>
<p>Error name: Tower endstop not reached</p>
<p>Error code: #10114</p>
<p>Issued when the printer cannot complete the tower movement during the initial calibration due to a connection error of the tower motor.</p>
<h3>How to fix it?</h3>
<p>Check the cable connection of the tower motor to the motion controller.</p>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-cable-connections.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-cable-connections-533x400.jpg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-cable-connections-800x600.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-cable-connections-300x225.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-cable-connections-768x576.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-cable-connections-1536x1152.jpg 1536w" alt="" width="600" height="450"></p>
<p>If the issue still happens after the cable is firmly connected, please contact <a href="http://help.prusa3d.com/article/customer-support_2287">Customer support</a>.</p>


Tower endstop not reached #10114 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Invalid tilt alignment position.</strong></p>
<p>Error name: Invalid tilt align position</p>
<p>Error code: #10121</p>
<h3>How to fix it?</h3>
<p>Use the steps below to check the tilt mechanism.</p>
<ol>
<li>Open the eight M3x5b screws securing the cover. <strong>Be careful to unplug the USB &amp; Power-cable before removing the cover completely.</strong></li>
</ol>
<table>
<tbody>
<tr>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-01.png" data-hd-height="350px" data-hd-align="center" /></p>
</td>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-02.png" data-hd-height="350px" data-hd-align="center" /></p>
</td>
<td>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-03.png" data-hd-height="350px" data-hd-align="center" /></p>
</td>
</tr>
</tbody>
</table>
<ol start="2">
<li style="counter-increment: li 2;">Remove the M4x10 screw holding the right side of the touch screen. It is not necessary to remove the left screw. Just loosen it about a half-turn and you can slide the screen out, like a door. This will give you access to the motor and connecting rod.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="250px" data-hd-align="center" /></p>
<div class="warning-callout">Be very careful with the touch screen flat cable. It is fragile and can be easily damaged or cut.</div>
<ol start="3">
<li>Move the connecting rod with your hands and see if it has a full range of motion and if the blade sensor-trigger is between the two sides of the sensor. If so, jump to step 12. If any resistance is found, continue with the next step.</li>
</ol>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted.jpeg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-533x400.jpeg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-800x600.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-300x225.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2021/03/6469b043fdec9c7d_painted-768x576.jpeg 768w" alt="" width="338" height="254" loading="lazy" /></p>
<ol start="4">
<li style="counter-increment: li 2;">Remove the M3nN-nut from the screw that connects the tilt-mechanism and the connecting rod. You can do that by using a spanner or pliers to hold the nut and an Allen key to unscrew from the other side.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-08-768x576.png 768w" data-hd-height="250px" data-hd-align="center" /></p>
<ol start="5">
<li style="counter-increment: li 3;">Remove the two M4x8 screws securing the tilt-motor holder to the bottom plate.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09.png" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-09-800x600.png 800w" data-hd-height="250px" data-hd-align="center" /></p>
<ol start="6">
<li style="counter-increment: li 4;">Remove the motor-holder and the connecting-rod from the tilt mechanism.</li>
<li>Go to <a href="http://help.prusa3d.com/guide/2-base-tower_8544#9384">Step 18</a> of <a href="http://help.prusa3d.com/guide/2-base-tower_8544">2. Base & Tower</a> of the assembly guide, and remake the connection of the connecting rod and the motor shaft.</li>
</ol>
<p><img decoding="async" style="max-height: 350px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-07.png" data-hd-height="350px" data-hd-align="center" /></p>
<div class="tip-callout">Pay extra attention to this step, as not aligning the connecting rod with the protrusion on the holder as instructed will cause the issue again.</div>
<ol start="8">
<li style="counter-increment: li 6;">Reassemble first the tilt to the connecting rod, make sure that after tightening the nut the two parts are in contact.</li>
</ol>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05-533x400.png 533w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-05.png" data-hd-height="250px" data-hd-align="center" /></p>
<div class="warning-callout">Do not over-tighten the nut!</div>
<ol start="9">
<li style="counter-increment: li 7;">Connect the motor holder to the bottom plate using the M4x8 screws.</li>
</ol>
<p> </p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-768x576.png 768w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06-800x600.png 800w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-06.png" data-hd-height="250px" data-hd-align="center" /></p>
<ol start="10">
<li style="counter-increment: li 8;">Make sure that the optical sensor cable has its correct end connected to the sensor. The middle wire should be blue. In case the middle wire on the sensor connector is black, the connection will need to be swapped.</li>
<li>Move the connecting-rod manually and see if it moves smoothly until the blade sensor-trigger is between the two sides of the sensor.</li>
</ol>
<div class="tip-callout">Make sure the sensor is secured!</div>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-261x300.png 261w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-348x400.png 348w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10-522x600.png 522w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-10.png" data-hd-height="250px" data-hd-align="center" /></p>
<ol start="12">
<li style="counter-increment: li 10;">Slide the LCD back to its place, and tighten both M4x10 screws holding it.</li>
</ol>
<p> </p>
<p><img decoding="async" style="max-height: 200px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-11.png" data-hd-height="200px" data-hd-align="center" /></p>
<ol start="13">
<li style="counter-increment: li 11;">Connect the USB and Power cable and close the eight M3x5b screws that hold the cover. Tighten them diagonally at first, and add all the screws before tightening them. Pay attention to the cables from the electronics so that they are not pinched.</li>
</ol>
<p> </p>
<p><img decoding="async" style="max-height: 250px; display: block; margin-left: auto; margin-right: auto;" title="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-300x225.png 300w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-533x400.png 533w, https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12-768x576.png 768w" src="https://cdn.help.prusa3d.com/wp-content/uploads/SL1-Tilt-mechanism-error-12.png" data-hd-height="250px" data-hd-align="center" /></p>
<ol start="14">
<li style="counter-increment: li 12;">Run the wizard again.</li>
</ol>
<p> </p>


Invalid tilt align position #10121 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>Internal error (DBUS mapping failed),</strong> please restart the printer. Contact the support if the problem persists.</p>
<p>Error name: Internal error (DBUS mapping failed)</p>
<p>Error code: <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;#10507&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">#10507</span></p>
<p>This is triggered by a software bug, but there is a small probability it is a result of a hardware error.</p>
<h3>How to fix it?</h3>
<p>Do a factory reset of the printer and flash the firmware. If the problem persists, the A64 logic board must be replaced.</p>
<h3>How to replace the part?</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1/SL1S)</a></p>
<p><a href="http://help.prusa3d.com/guide/how-to-replace-the-a64-board-sl1_151162">How to replace the A64 board (SL1)</a>&nbsp;</p>


Internal error (DBUS mapping failed) #10507 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>The printer is not calibrated. Please run the Wizard first</strong>.</p>
<p>Error name: Not mechanically calibrated</p>
<p>Error code: #10113</p>
<p>Issued when the printer has not been calibrated before a print.</p>
<h3>How to fix it?</h3>
<p>Go in the printer menu to <em>LCD menu -&gt; Settings -&gt; Calibration -&gt; Printer Calibration</em>. Follow the instructions on the screen, and remember that you can swipe the screen to see example pictures of each step of the calibration.</p>


Calibration error #10113 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>Tower not in the expected position. Are the platform and tank mounted and secured correctly?</strong></p>
<p>Error name: Tower position error</p>
<p>Error code: #10123</p>
<p>Issued when the calibration has not been able to successfully calibrate the tower axis.</p>
<h3>How to fix it?</h3>
<p>This error happens when the printer detects the tower as being at a level that, when fully lowered, will be lower the display. This can happen if the tower calibration has not been made correctly, or if there are any loose parts in the tower axis or on the tank.</p>
<p>To fix the error, remake the printer calibration (LCD Menu -&gt; Settings -&gt; Calibration). The cantilever screw needs to be very firmly tightened. When tightening one or both of the cantilever screws, do so with the short part of the Allen key, as you can apply more force this way.</p>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2020/12/tightening-screw.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2020/12/tightening-screw-533x400.jpg 533w, https://cdn.help.prusa3d.com/wp-content/uploads/2020/12/tightening-screw-800x600.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2020/12/tightening-screw-300x225.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2020/12/tightening-screw-768x576.jpg 768w" alt="" width="600" height="450"></p>
<p>If the issue persists, please contact <a href="http://help.prusa3d.com/article/customer-support_2287">Customer support</a>.</p>


Tower position error #10123 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer is displaying the message: <strong>The printer has booted from an alternative slot due to failed boot attempts using the primary slot.</strong> Update the printer with up-to-date firmware ASAP to recover the primary slot. This usually happens after a failed update, or due to a hardware failure. Printer settings may have been reset.</p>
<p>Error name: Boot slot changed&nbsp;</p>
<p>Error code: #10601</p>
<h3>How to fix it?</h3>
<p>Try to flash the firmware again. Try to avoid using OTA flashing as your network can be a factor. If it persists, it may indicate an issue with the on-board eMMC storage and the board may need to be replaced. If so, please contact support.</p>
<h3>Guides</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1)</a></p>


Boot slot changed #10601 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>This Wizard cannot be canceled</strong>, please finish the steps.</p>
<p>Error name: This Wizard cannot be canceled</p>
<p>Error code: <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;#10522&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">#10522</span></p>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Unpacking cannot be canceled. There should be no way to cancel it in the UI anyway. This error is displayed in case someone manages to start the action due to poor remote UI synchronization or programming error.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">Is not possible to be triggered by direct user input. This error is displayed in case someone manages to cancel the wizard due to poor remote UI</span> <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;Unpacking cannot be canceled. There should be no way to cancel it in the UI anyway. This error is displayed in case someone manages to start the action due to poor remote UI synchronization or programming error.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">synchronization or a programming error.</span></p>
<h3>How to fix it?</h3>
<p>Check the network connectivity of your device.</p>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This is related to stable, beta, dev update channels. The user can switch stable&lt;-&gt;beta in advanced settings -&gt; firmware update. The admin interface allows to switch also to dev. This signals switch failure. Most probably the printer configuration is somehow broken. An update to latest build in the current channel or factory reset could help.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">Update to the latest stable firmware version and/or factory reset.</span></p>
<h3>Guide</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1/SL1S)</a></p>


This Wizard cannot be canceled #10522 (SL1/SL1S)

<h3>What happened?</h3>
<p>The printer displaying the message: <strong>Cannot set the update channel</strong>, please restart the printer and try again.</p>
<p>Error name: Cannot set update channel</p>
<p>Error code: <span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;#10513&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">#10513</span></p>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This is related to stable, beta, dev update channels. The user can switch stable&lt;-&gt;beta in advanced settings -&gt; firmware update. The admin interface allows to switch also to dev. This signals switch failure. Most probably the printer configuration is somehow broken. An update to latest build in the current channel or factory reset could help.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">This is related to update channels for stable or beta versions of the firmware. The user can choose between a stable and beta version of the firmware, in Settings -&gt; Firmware. Most probably the printer configuration is somehow broken.&nbsp;</span></p>
<h3>How to fix it?</h3>
<p><span data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;This is related to stable, beta, dev update channels. The user can switch stable&lt;-&gt;beta in advanced settings -&gt; firmware update. The admin interface allows to switch also to dev. This signals switch failure. Most probably the printer configuration is somehow broken. An update to latest build in the current channel or factory reset could help.&quot;}" data-sheets-userformat="{&quot;2&quot;:33554945,&quot;3&quot;:{&quot;1&quot;:0},&quot;12&quot;:0,&quot;28&quot;:1}">Update to the latest stable firmware version and/or factory reset.</span></p>
<h3>Guide</h3>
<p><a href="http://help.prusa3d.com/article/firmware-updating-sl1-sl1s_124776">Firmware updating (SL1/SL1S)</a></p>


Cannot set update channel #10513 (SL1/SL1S)

1.01

<ul>
<li>Note: The firmware downgrade is not supported for this version</li>
<li>Initial version.</li>
</ul>


1.0.5

<ul>
<li>Note: The firmware downgrade is not supported for this version</li>
<li>Fixed UI updates at print page right after timezone change</li>
</ul>


1.1.1

<ul>
<li>New chapter with printing errors</li>
<li>Warranty info added</li>
<li>Minor adjustments and improvements</li>
</ul>


1.02

<ul>
<li>Note: The firmware downgrade is not supported for this version</li>
<li>Multiple languages support</li>
<li>Touch UI improvements</li>
<li>Wizard improvements</li>
<li>Factory defaults protection</li>
<li>Bug fixes</li>
<li>Other changes (complete release log below)</li>
</ul>


1.2.0

<p>This is a bugfix release.</p>
<ul>
<li>Fixed UV LED exposure timing</li>
<li>Auto adjust tower profiles for reliable homing</li>
<li>Fixed bugs (see the full changelog)</li>
</ul>


1.2.1

<ul>
<li>Updated to match the latest changes in 1.2.0 firmware</li>
</ul>


1.03

<ul>
<li>Note: The firmware downgrade is not supported for this version</li>
<li>Print quality improvements</li>
<li>Vibration elimination while printing</li>
<li>Blower fan fixes</li>
</ul>


1.2.2

<ul>
<li>Note: The firmware downgrade is not supported for this version</li>
<li>Fixed tilt jerk in calibration</li>
<li>Fixed rehoming tilt when printing</li>
</ul>


1.2.3

<ul>
<li>New network management</li>
<li>New update system (OTA)</li>
<li>Localized user interface</li>
<li>User resin calibration (<a href="https://help.prusa3d.com/article/z2in03stzn-sl-1-resin-calibration">check out the guide and video</a>)</li>
<li>Improved graphics in Wizard/Calibration</li>
<li>Printer not calibrated warning at startup</li>
<li>Phantom click resistant UI</li>
<li>Fixed bugs</li>
</ul>


1.3.0

<ul>
<li>New web interface</li>
<li>Software licenses updated</li>
<li>Fixed bugs</li>
</ul>


1.3.2

1.3.3

<ul class="p-rich_text_list p-rich_text_list__bullet" data-stringify-type="unordered-list" data-indent="0">
<li>Updated texts to match the latest firmware</li>
<li>Calibration of custom resins added</li>
<li>Hollowing in PrusaSlicer added</li>
<li>PrusaConnect / Network printing section updated</li>
</ul>


1.04

<p>To install this version you have to update from 1.3.0 or newer.</p>
<ul>
<li>User UV calibration (<a href="http://help.prusa3d.com/guide/how-to-replace-the-print-display-sl1_133295">calibration guide</a>)</li>
<li>Parallel pre-print checks</li>
<li>Manual check for firmware updates</li>
<li>Simplified fan checks</li>
<li>Upload notifications redesigned</li>
<li>Fixed bugs</li>
</ul>


1.4.0

<ul>
<li>Added information reflecting changes in firmware 1.4.0</li>
<li>Added instructions on print display replacement and UV LED panel calibration</li>
<li>Updated firmware update information</li>
</ul>


1.05

<ul class="p-rich_text_list p-rich_text_list__bullet" data-stringify-type="unordered-list" data-indent="0">
<li>Fixed missing timezones</li>
<li>Fixed UV calibrator disconnection</li>
<li>Fixed data corruption on USB</li>
<li>Fixed resin volume warning</li>
<li>Fixed preprint warning delay</li>
<li>Fixed "printer is not calibrated" message during calibration</li>
<li>Improved system logs</li>
<li>Other bug fixes</li>
</ul>


1.4.1

<ul>
<li>UV calibration algorithm updated</li>
<li>Fixed cover check after resin refill</li>
</ul>


1.4.2

<ul>
<li>QR Error codes</li>
<li>Redesigned Settings menu</li>
<li>Advanced Prusa Connect Local</li>
<li>One-click print functionality</li>
<li>Top bar notifications</li>
<li>Firmware upgrade &amp; downgrade</li>
<li>Backlight and screensaver control</li>
<li>Project files thumbnails</li>
<li>Log upload improved</li>
<li>Print statistics</li>
<li>Others</li>
<li>Fixed bugs</li>
</ul>


1.5.0

<p>The firmware can be installed on both SL1 and SL1S SPEED, it will recognize the printer based on the print display and set the parameters accordingly.</p>
<ul>
<li>Updated Wizards and Selftest wizard</li>
<li>SL1S SPEED print profiles</li>
<li>Speed of first layers</li>
<li>Automatic print adjustments (large objects)</li>
<li>New power button behavior</li>
<li>Transition to DBus for IPC</li>
<li>Improved translations and localisations</li>
<li>Improved screensaver</li>
<li>Improved logging procedure</li>
<li>PrusaLink updates</li>
<li>Print display time counter</li>
<li>Improved cooling</li>
<li>Screen compositor Weston</li>
</ul>


1.6.0

<ul>
<li>PrusaSlicer 2.3.3
<ul>
<li>Patch release - fixing the bug in handling FDM multi-material project and configuration files</li>
</ul>
</li>
</ul>


2.3.3

<p>The firmware can be installed on both SL1 and SL1S SPEED, it will recognize the printer based on the print display and set the parameters accordingly. This firmware is required for the upgrade from SL1 to SL1S.</p>
<ul>
<li style="font-weight: 400;" aria-level="1">New print display driver</li>
<li style="font-weight: 400;" aria-level="1">Support for diacritics in filenames</li>
<li style="font-weight: 400;" aria-level="1">Improved display counter</li>
<li style="font-weight: 400;" aria-level="1">PrusaLink improvement</li>
<li style="font-weight: 400;" aria-level="1">Preprint checks</li>
<li style="font-weight: 400;" aria-level="1">Increased space for user prints</li>
<li style="font-weight: 400;" aria-level="1">Other improvements and bug fixes</li>
</ul>


1.6.1

<p>This release is a small hotfix for the SL1 and SL1S:</p>
<ul>
<li>Factory reset fixed</li>
</ul>
<p>See full release log for more details.</p>


1.6.2

<p>This release includes two changes in the user interface and several bug fixes for the SL1 and SL1S:</p>
<ul>
<li>Preprint workflow changed</li>
<li>Print profile selection added to PrusaLink</li>
</ul>
<p>See full release log for more details.</p>


1.6.3

<ul>
<li>Multi-material painting</li>
<li>Improved supports and bridging</li>
<li>Shape gallery</li>
<li>Fuzzy skin</li>
<li>Windows dark mode</li>
<li>Brim for individual objects</li>
<li>Negative volumes</li>
<li>Automatic color change for logos and signs</li>
<li>Tip of the day notifications</li>
<li>Model simplification</li>
<li>Support for 3DLabPrint airplane models</li>
<li>New 3rd party printer profiles</li>
<li>…and more!</li>
</ul>


2.4.0

<ul>
<li>Added support for M1</li>
<li>Bug fixes</li>
</ul>


1.6.4

<ul>
<li>G-Code Substitutions</li>
<li>Added profiles for Anycubic 4Max Pro 2.0</li>
<li>Added Artillery Hornet profile</li>
<li>Added RatRig V-Core and V-Minion bundle</li>
<li>Added Jubilee bundle</li>
</ul>


2.4.1

<ul>
<li>Support for new rear fan</li>
<li>Support for new DAC converter</li>
</ul>
<p></p>

1.6.6

<ul class="p-rich_text_list p-rich_text_list__bullet" data-stringify-type="unordered-list" data-indent="0" data-border="0">
<li data-stringify-indent="0" data-stringify-border="0">Updated translations</li>
<li data-stringify-indent="0" data-stringify-border="0">Added profiles for Snapmaker printers</li>
<li data-stringify-indent="0" data-stringify-border="0">Added profiles for Zonestar printers</li>
<li data-stringify-indent="0" data-stringify-border="0">Bug fixes</li>
</ul>
<p></p>

2.4.2

1.7.0

<ul>
<li>New perimeter generator Arachne</li>
<li>STEP file format support</li>
<li>Lightning infill</li>
<li>Improved seam placement based on the visibility</li>
<li>Pressure equalizer</li>
<li>New printer and material profiles</li>
<li>Many bugfixes and smaller improvements</li>
<li>Offline unattended installation for mass deploys (in Drivers &amp; Apps package installator).</li>
</ul>
<p></p>

2.5.0

<ul>
<li>Fixed bugs</li>
<li>Known issues</li>
</ul>
<p></p>

1.7.1


<ul>
<li>Improved 'Monotonic lines' fill pattern</li>



<li>Improved Acceleration control</li>



<li>Specific object arrangement for XL</li>



<li>Original Prusa XL profiles</li>



<li>Updated translations</li>



<li>Bugfixes</li>
</ul>


2.5.1


<ul>
<li>Original Prusa MK4 profiles</li>
</ul>


2.5.2


<ul>
<li>Organic supports</li>



<li>Automatic support painter</li>



<li>Text embossing tool</li>



<li>Improved cut tool</li>



<li>Adding connectors and dowel pins</li>



<li>Measurement tool</li>



<li>Dynamic overhang speed</li>



<li>Improved Ensure vertical shell thickness</li>



<li>Smart extending of sparse infill</li>
</ul>


2.6.0


<ul>
<li>New Arrange tool options</li>



<li>New Cut tool options</li>



<li>Per-symbol text projection on surface</li>



<li>Interlocking of painted areas for MMU printing</li>
</ul>


2.6.1


<ul>
<li>New SVG support</li>



<li>Binary G-Code (.bgcode) export support + conversion</li>



<li>Arc fitting support </li>
</ul>


2.7.0


<ul>
<li>Binary G-code settings</li>



<li>Wipe tower weight</li>



<li>Bug fixes</li>
</ul>


2.7.1


<ul>
<li>Project thumbnail page while printing</li>



<li>Elephant foot and exposure times compensation fix</li>



<li>Help pages split between M1 and SL1/S</li>



<li>Red screen (error page) with a scrollable layout</li>



<li>Bug fixes</li>



<li>Known issues</li>
</ul>


1.7.2


<ul>
<li>Improvements to multi-material printing</li>



<li>Vase mode smoothing</li>



<li>Support for 3MF files generated in BambuStudio</li>



<li>Metadata with boundary polygon of each object</li>
</ul>


2.7.3


<ul>
<li>Objects from 3MFs generated by BambuStudio now retain multimaterial painting when loaded</li>



<li>Fixed a bug where downloading files from Printables did not work when enabled in Preferences</li>
</ul>


2.7.4


<ul>
<li>Prusa Connect integration</li>



<li>Prusa Account integration</li>



<li>Improved UI</li>



<li>Improved G-code Viewer</li>



<li>New system profile updating system</li>



<li>Single Perimeter for top and bottom layers</li>



<li>Extended SLA layer separation configuration</li>



<li>Bug fixes</li>
</ul>


2.8.0


<ul>
<li>Improved menu bar, the menu no longer hides under a button</li>



<li>Two new parameters (Abrasive material and High flow nozzle) for G-Code checks</li>



<li>Improved automatic orientation of bridges</li>



<li>Number of bugfixes</li>
</ul>


Original Prusa SL1

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