MK3.9

<p><strong>MK4 to MK4S upgrade <br /></strong></p>
<p>The current lead time is <strong>2-3 weeks </strong>for both xLCD versions.</p>
<table class="table" style="border-collapse: collapse; height: 330.828px; border-style: ridge; width: 100%;" border="1">
<tbody>
<tr style="height: 28.375px;">
<td style="width: 29.0798%; height: 28.375px; border-style: dotted; border-width: 1px; text-align: left;">Order week</td>
<td style="width: 29.2017%; height: 28.375px; border-style: dotted; border-width: 1px; text-align: left;">Order date</td>
<td style="width: 41.7185%; height: 28.375px; border-style: dotted; border-width: 1px; text-align: left;">Shipping estimate</td>
</tr>
<tr style="height: 33.25px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 33.25px;">Week 33</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 33.25px;">starts August 12, 2024</td>
<td style="width: 41.7185%; height: 33.25px; border-style: dotted; border-width: 1px; text-align: left;" rowspan="2">Already shipped</td>
</tr>
<tr style="height: 24.7344px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 24.7344px;">Week 34</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 24.7344px;">starts August 19, 2024</td>
</tr>
<tr style="height: 24.7344px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 24.7344px;">Week 35</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 24.7344px;">starts August 26, 2024</td>
<td style="width: 41.7185%; height: 101.203px; border-style: dotted; border-width: 1px; text-align: left;" rowspan="6">Currently shipping</td>
</tr>
<tr style="height: 24.7344px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 24.7344px;">Week 36</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 24.7344px;">starts September 2, 2024</td>
</tr>
<tr style="height: 27px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 27px;">Week 37</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 27px;">starts September 9, 2024</td>
</tr>
<tr style="height: 30px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 30px;">Week 38</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 30px;">starts September 16, 2024</td>
</tr>
<tr style="height: 27px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 27px;">Week 39</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 27px;">starts September 23, 2024</td>
</tr>
<tr style="height: 27px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 27px;">Week 40</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 27px;">starts September 30, 2024</td>
</tr>
<tr style="height: 21px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">Week 41</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">starts October 7, 2024</td>
<td style="width: 41.7185%; border-style: dotted; border-width: 1px; text-align: left; height: 84px;" rowspan="3">From week 47 (starts November 18, 2024)</td>
</tr>
<tr style="height: 21px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">Week 42</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">starts October 14, 2024</td>
</tr>
<tr style="height: 21px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">Week 43</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">starts October 21, 2024</td>
</tr>
<tr style="height: 21px;">
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">Week 44</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left; height: 21px;">starts October 28, 2024</td>
<td style="width: 41.7185%; border-style: dotted; border-width: 1px; text-align: left;" rowspan="3">From week 48 (starts November 25, 2024)</td>
</tr>
<tr>
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left;">Week 45</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left;">starts November 4, 2024</td>
</tr>
<tr>
<td style="width: 29.0798%; border-style: dotted; border-width: 1px; text-align: left;">Week 46</td>
<td style="width: 29.2017%; border-style: dotted; border-width: 1px; text-align: left;">starts November 11, 2024</td>
</tr>
</tbody>
</table>
<p></p>
<p> </p>
<h3><span style="font-size: 20px;">Current lead time estimates for new orders</span></h3>
<p><span style="color: #e67e23;"><strong>Updated: November 11th, 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> </p>
<p></p>
<table class="table" style="border-collapse: collapse; height: 765.922px; border-style: ridge; width: 100%;" border="1">
<tbody>
<tr style="height: 27.922px;">
<td style="height: 27.922px; width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center;">
<h4>Product</h4>
</td>
<td style="height: 27.922px; 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>Original Prusa XL Enclosure<br /></strong><em>(standalone)</em><strong><br /></strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>In stock</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>Advanced Filtration System <br /></strong>(for Original Prusa Enclosure)</p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>In stock</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>MK4 to MK4S upgrade<br /></strong>/MK4S upgrade for versions with old xLCD</p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>2-3 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>MK3.9 to MK3.9S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 72px;">
<p><strong>In stock</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>2-3 weeks</strong></p>
</td>
</tr>
<tr>
<td style="width: 48.3436%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>MK3S/+ to MK3.9S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center;">
<p><strong>In stock</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 MK3.5S upgrade</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>In stock</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 (for MK4S/MK3.9S)</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>MMU3 assembled unit (for MK4S/MK3.9S) </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>MMU3 assembled unit (for MK4/MK3.9)</strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>In stock</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>MMU3 assembled unit (for MK3.5S/MK3.5) </strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>In stock</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>MMU3 assembled unit (for MK3S+) </strong></p>
</td>
<td style="width: 51.6564%; border-style: dotted; border-width: 1px; text-align: center; height: 51px;">
<p><strong>In stock</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 />for MK4S/MK3.9S</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>
</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

Infill patterns

<div class="warning-callout">This is an&nbsp;<strong>advanced calibration</strong>, recommended only to&nbsp;<strong>experienced users</strong>.</div>
<p>The Extrusion Multiplier allows the fine-tuning of the extrusion flow rate - simply described as&nbsp;<strong>how much filament comes out of the nozzle</strong>. In other words, the&nbsp;<strong>Extrusion Multiplier</strong>&nbsp;setting in PrusaSlicer and the&nbsp;<strong>Flow rate</strong>&nbsp;setting in printer firmware are two ways to adjust the same thing, however, adjusting one of those two settings will not influence the value of the other.</p>
<p><strong>This procedure is not necessary with a new printer coming from the factory</strong>, but rather applies for specific applications and filaments. The ideal value is different for every type of material and every color. It can even differ from spool to spool. Bear this in mind if you change type and brand of filament often or use cheap no-name brands.</p>
<div class="note-callout">Total flow rate = <strong>Flow multiplier</strong> in firmware (M221) x <strong>Extrusion multiplier</strong> in PrusaSlicer. For those interested in diving deeper, PrusaSlicer uses the same <a href="https://manual.slic3r.org/advanced/flow-math">Flow math as Slic3r</a>.</div>
<h3><strong>How to spot an issue</strong></h3>
<p>This calibration is used to fix two common problems:</p>
<ul>
<li><strong>Overextrusion</strong> - Too much material is extruded (flow is too high). It causes scarring of bottom layers and unnecessary material buildup on top layers.</li>
<li><strong>Minor under extrusion</strong>&nbsp;- Not enough material is extruded (flow is too low). It causes small gaps that appear between layer lines or perimeters.</li>
</ul>
<p><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/under-ok-over.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/under-ok-over-600x282.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/under-ok-over-800x376.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/under-ok-over-300x141.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/under-ok-over-768x361.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/under-ok-over-1536x721.jpg 1536w" alt="" width="852" height="400"></p>
<p><strong>Overextrusion</strong> is a common problem with many filament brands. It's especially problematic when you're trying to glue two parts of the model. <strong>If the top layer is over extruded, you'll end up with an uneven surface that will prevent a seamless connection between the two pieces.</strong></p>
<h3><strong>How to do the calibration</strong></h3>
<p>In PrusaSlicer, navigate to <span class="key">Filament Settings</span> and look for Extrusion Multiplier. The default setting (for PLA) is 1, this value represents a percentage, 1 = 100%, 0.95 = 95% etc. Usually, the adjusted values can be between 0.9 and 1.1. To adjust it, simply rewrite the value.</p>
<p><img decoding="async" style="max-height: 200px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusuki/prusuki-images/image-2019-1-15-12-55-6.png" data-hd-height="200px"></p>
<p>In the printer menu, during a print, go to the Tune menu and then choose Flow. Again, the usual values can range between 90 and 110, although that does not mean you can't go above or below that.</p>
<h4>Which method should I use?</h4>
<p>There are two methods you can use to calibrate the Extrusion Multiplier, and we'll cover both of them in this article:</p>
<ul>
<li><strong>Precise Method</strong>&nbsp; -&nbsp; using precision tools such as calipers or micrometers.</li>
<li><strong>Visual Method&nbsp;</strong>&nbsp;- an easy method based on observing the visual properties of your models.</li>
</ul>
<p>The choice of the method depends entirely on your preferences; in the end, both yield similar results. Even the visual method will enable you to have perfectly fitting parts with smooth &amp; flat top layers.</p>
<h4>Precise Method</h4>
<div class="note-callout">Please note that the following guide is based on <strong>default</strong> PrusaSlicer 0.4 nozzle profiles, with a layer height of 0.1mm - 0.2mm. This means that:<br />
- Nozzle size = 0.4<br />
- Extrusion width =&nbsp;0.45<br />
- Basic materials (PLA, ABS, PETG) Extrusion Multiplier = 1<br />
<strong>If you wish to calibrate the printer with a bigger/smaller nozzle or layer heights above 0.2, then you will need to adjust these values as well.</strong></div>
<ol>
<li>Download the <a href="https://cdn.help.prusa3d.com/wp-content/uploads/2021/04/cube-40-40-40.zip">Precision Method Cube STL</a>.</li>
<li>Slice it using the Vase Mode and your most-often used layer height and print it. You can find Vase mode (Print Settings →&nbsp; Layers and perimeters →&nbsp; Spiral vase).</li>
<li>Make three or more measurements in the middle of each wall and calculate the overall average thickness.</li>
<li>Calculate the extrusion multiplier using the following formula: <strong>Extrusion multiplier = (Extrusion width (0.45) / Average measured wall thickness)</strong>.</li>
<li>Adjust the Extrusion Multiplier in Filament Settings → Filament</li>
<li>Re-print the cube with new settings and go back to step 3 if necessary.</li>
</ol>
<p><img decoding="async" style="max-height: 220px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusuki/prusuki-images/micrometer-small-jpg.JPG" height="400" data-hd-height="220px"></p>
<div class="warning-callout">Please note that cheap digital calipers may not be accurate enough to make reliable measurements of a single perimeter wall.</div>
<h4>Visual Method</h4>
<p>This method does not require any tools, only your sight. The point is to make sure your top layers are <strong>smooth</strong>, <strong>shiny,</strong> and without <strong>scarring or filament buildup</strong> near the perimeters.</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/destiky6.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/destiky6-600x374.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/destiky6-800x499.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/destiky6-300x187.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/destiky6-768x479.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/destiky6-1536x958.jpg 1536w" alt="" width="641" height="400"></p>
<ol>
<li>Download the <a href="https://cdn.help.prusa3d.com/wp-content/uploads/2021/04/visual-method-cube.zip">Visual Method Cube.stl</a></li>
<li>Slice it using the default Prusa PLA presets at 0.20mm layer height and print it.</li>
<li>Inspect the top layer of your cube visually and with the tip of the finger.</li>
<li>If the top is under extruded or not smooth, then re-adjust the Extrusion Multiplier accordingly by 1-2%.</li>
<li>Repeat the steps above as long as needed.</li>
</ol>
<p>If there is&nbsp;<strong>too much material</strong>&nbsp;near the perimeters,&nbsp;<strong>decrease</strong>&nbsp;the Extrusion Multiplier value.</p>
<p><img decoding="async" style="max-height: 390px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusuki/prusuki-images/buildu.jpg" data-hd-height="390px" data-hd-align="left"></p>
<p>If there are&nbsp;<strong>visible gaps</strong>&nbsp;between layer lines,&nbsp;<strong>increase</strong> the Extrusion Multiplier value. (Microscopic gaps near the perimeters are OK.)</p>
<p><img decoding="async" style="max-height: 430px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusuki/prusuki-images/gaps.jpg" data-hd-height="430px" data-hd-align="left"></p>


Extrusion multiplier calibration

<p>Stringing or oozing, also known as "hairy prints", is the name given for when small strings of filament are left on a printed model. This usually happens when the filament keeps flowing from the nozzle while the extruder is moving to another object. You can see this as a marginal line of filament left between the objects.</p>
<p>This issue is caused by <strong>very high printing temperatures and/or using incorrect retraction settings</strong>. This can be solved by changing a couple of settings in PrusaSlicer and checking your hardware.</p>
<table style="border-collapse: collapse; width: 100%;" border="0">
<tbody>
<tr>
<td style="width: 48.8442%;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b-600x383.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b-800x511.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b-300x192.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b-768x490.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b-1536x981.jpg 1536w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b-2048x1308.jpg 2048w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/90014ff5fc80d10b.jpg 1600w" alt="" width="400" height="255"></td>
<td style="width: 48.8442%;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/b1b72c32290b8c00.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/b1b72c32290b8c00-600x400.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/b1b72c32290b8c00-800x534.jpg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/b1b72c32290b8c00-300x200.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/b1b72c32290b8c00-768x512.jpg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/b1b72c32290b8c00.jpg 1600w" alt="" width="400" height="267"></td>
</tr>
</tbody>
</table>
<h3>Stringing from material left on the nozzle</h3>
<p>If you print for a long time from a single type of filament, such as PET-G, the filament can create a thin layer in the nozzle. This can cause stringing as the strands of the filament stick to the surface of the print. Therefore, thoroughly clean the nozzle before printing and make sure that any dirt or remnants of previous filaments are removed from the nozzle.</p>
<div class="warning-callout">We highly recommend using our official (factory default) preset settings in PrusaSlicer. However, if you are printing with your own settings, make sure that you have the retraction settings configured correctly.</div>
<h3>PrusaSlicer settings</h3>
<p><img decoding="async" loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted.jpeg" sizes="(min-width: 1024px) 820px, 100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted-600x359.jpeg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted-800x479.jpeg 800w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted-300x179.jpeg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted-768x459.jpeg 768w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted-1536x919.jpeg 1536w, https://cdn.help.prusa3d.com/wp-content/uploads/2022/02/432d664dd4b64d78_painted.jpeg 1600w" alt="" width="700" height="419"></p>
<p>You should start by checking a parameter known as Retraction. What does retraction do? When the extruder has finished printing one section/object of your g-code, the filament is pulled back into the nozzle. Once the extruder moves to the next location the printing process continues – the filament is pushed back out and it starts extruding from the nozzle again. Retraction settings can be found in PrusaSlicer in <em>Printer Settings -&gt; Extruder 1</em>.</p>
<p>Flexible filaments usually need longer retractions, because the material stretches while being pulled back to the nozzle. Flexible materials are a special case and can need a lot of tweaking and tuning.</p>
<p><strong>The retraction settings are:</strong></p>
<ul>
<li><strong>Retraction length:</strong> Amount that the filament is pulled back when a retraction is triggered. <strong>On the MK2.5/S and MK3/S/+, the retraction length should be a maximum of 2 mm.</strong></li>
</ul>
<div class="tip-callout">Due to the Bowden extruder, the retraction length of the Original Prusa MINI/MINI+ presets are much longer (default 3.2 mm).</div>
<ul>
<li><strong>Lift z:</strong> lifts the extruder during movement. Having this setting lower will improve stringing. Note that disabling this feature may cause the nozzle to hit the printed part.<strong><br /></strong></li>
<li><strong>Retraction Speed:</strong> Extruder motor speed on retraction. A higher value improves stringing, but if it is too high it may skip steps in the motor.</li>
<li><strong>Minimum travel after retraction:</strong> Amount of move that will trigger a retraction (mm). The preset number in PrusaSlicer is 1 mm, which is a low amount. Having this number higher will get lower printing times, but increase oozing and stringing.</li>
<li><strong>Retract on layer change:</strong> Activates retraction when the layer changes to the next one. It is recommended to leave this option on.</li>
<li><strong>Wipe while retracting:</strong> Moves the nozzle (wipe) while the retraction is happening. It is recommended to leave this option on.</li>
<li><strong>Retract amount before wiping:</strong> This option does a quick retract before doing the wiping movement. More suitable for the Original Prusa MINI/MINI+.</li>
</ul>
<p><strong>Other settings that affect retraction:</strong></p>
<ul>
<li><strong>Only retract when crossing perimeters:</strong> <em>(Print settings -&gt; Infill -&gt; Advanced):</em> Disables retraction when the travel path does not exceed the upper layer's perimeter. Any oozing that happens will be within the walls and should be invisible.</li>
<li><strong>Avoid crossing perimeters:</strong> <em>(Print settings -&gt; Layers and perimeters -&gt; Quality):</em> Optimize travel moves in order to minimize the crossing of perimeters. This will lower the stringing amount, especially in the MINI/MINI+.</li>
<li><strong><a href="http://help.prusa3d.com/article/sequential-printing_124589">Sequential printing</a>:</strong> <em>(Print settings -&gt; Output options -&gt; Sequential printing):</em> Printing each object individually has a smaller chance of causing stringing between the parts. When using this feature, PrusaSlicer will warn you of any possibility of the extruder colliding with an already printed part, but follow the print closely.</li>
<li><strong>Nozzle temperature:</strong> <em>(Filament settings -&gt; Filament -&gt; Nozzle):</em> Lowering the temperature decreases the occurrence of strings. Try decreasing the nozzle temperature by 5 – 10°C and check whether there’s less stringing.</li>
</ul>
<h3>Filament</h3>
<p>Try using a different spool than the one that is causing the stringing. The filament might have gathered moisture, which will cause a lot of stringing.</p>
<h3>Hotend</h3>
<p>Stringing in the nozzle might be caused by a heat dissipation issue in the nozzle. Try <a href="http://help.prusa3d.com/guide/how-to-replace-a-heatbreak-heatsink-heaterblock-mk3s-mk3s-mk2-5s-mmu2s_16104">re-applying thermal paste</a> on the threads between the heatbreak and the heatsink.</p>
<p>If you have recently changed any component in the hotend, it is also possible that some individual parts are not in place. Go over the assembly of the hotend and check for any parts that may be different from the <a href="http://help.prusa3d.com/guide/how-to-replace-a-heatbreak-heatsink-heaterblock-mk3s-mk3s-mk2-5s-mmu2s_16104">instructions</a>.</p>
<h3>Enough settings, pass me my <strong>heat-gun!</strong></h3>
<p>If you don’t feel like tweaking any of the settings, well, then there is an alternative. You can get rid of the strings with a heat gun (or often with a lighter – but be very careful). Set your heat-gun to around 200 °C and aim at the strings for one or two seconds. This will melt the strings, and the printed object should remain undamaged. Do not leave the heat source on the printed model for longer than one or two seconds, as this may deform the part.</p>


Stringing and oozing

<div><strong><img decoding="async" loading="lazy" style="float: right;" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-768x768.jpg 768w" alt="" width="225" height="225"></strong></div>
<h3>Basic info</h3>
<div><strong>PETG</strong> is one of the most easily printable materials, it is <strong>inexpensive and suitable for beginners</strong>. Relatively high tenacity and temperature resistance make it <strong>suitable for printing technical parts</strong> (for example parts of our printers).</div>
<div>&nbsp;</div>
<div><strong>Recommended nozzle temperature:</strong> 230 °C for the first layer, 240 °C for the other layers</div>
<div>&nbsp;</div>
<div><strong>Recommended bed temperature:</strong> 85 °C for the first layer, 90 °C for the other layers</div>
<div>&nbsp;</div>
<div><strong>Heatbed:</strong> Using powder-coated TXT or satin sheet is highly recommended. Printing on smooth PEI surface might damage the sheet.</div>
<h3>Description</h3>
<div>
<p><a href="https://www.prusa3d.com/category/prusament-petg/"><strong data-stringify-type="bold">PETG</strong></a> (Polyethylene Terephthalate modified with Glycol) is a commonly used technical material, popular among 3D printer users for its <strong>low price and good printability</strong>. It’s tenacious, with good temperature resistance; PETG is most commonly used for printing various mechanical parts, holders, clamps, and waterproof parts (thanks to great layer adhesion).</p>
<p>PETG has a glossy surface, adheres greatly to a print sheet, and <strong>does not shrink or warp</strong> (it has very little thermal expansion), therefore it’s suitable for printing large models. Plus, its high tenacity and flexibility often <strong>prevent it from breaking.</strong> Due to good temperature resistance, PETG parts are suitable both for interior and most exterior use (with temperatures below 80 °C). <strong>Parts of our printers are made of PETG!</strong></p>
<p>The letter G in PETG means that it’s modified with glycol during the manufacturing process. Glycol makes PET less brittle, easier to print, and more transparent for translucent prints. Of course, you can print also with PET filaments without glycol. However, printing with only PET is challenging and does not offer any advantage whatsoever.</p>
<div class="warning-callout">Even though PETG in itself may be considered <a href="http://help.prusa3d.com/article/food-safe-fdm-printing_112313">food-safe</a>, it consists of layers, as every 3D print, in which bacteria can grow over time. You can prevent this by applying a <strong>food-safe(epoxy) coating.</strong> Also, a stainless-steel nozzle should be used for if food is the intended application.</div>
<p>Although <strong>PETG</strong> is frequently used in <strong>food industry</strong> and is considered <strong>food-safe</strong>, we do not recommend it (or any other filament) for printing dishes or other stuff that comes into direct contact with food. The main reason is tiny print layer surface grooves that can support numerous bacterial colonies. But if you still want 3D printed dishes, we suggest <strong>applying a special layer</strong> that seals the surface (food-safe coating) and printing with a clean steel nozzle.</p>
<p>Some of the manufacturers <strong>enrich PETG with various additives</strong> and sell these materials under different names. For example, Spoolworks EDGE by E3D is modified PET/Copolyester Blend with additives. The goal is to acquire better visual qualities, surface and layer adhesion, etc.</p>
<p>To compare supported material properties, see our <a href="https://help.prusa3d.com/en/materials">material table.</a></p>
</div>
<table class="striped">
<tbody>
<tr>
<th>
<p>Pros</p>
</th>
<th>
<p>Cons</p>
</th>
</tr>
<tr>
<td>
<p>✔ Easy to print</p>
</td>
<td>
<p>✖ Possibility of stringing</p>
</td>
</tr>
<tr>
<td>
<p>✔ Good layer adhesion</p>
</td>
<td>
<p>✖ Poor bridging and overhangs</p>
</td>
</tr>
<tr>
<td>
<p>✔ Tough and durable</p>
</td>
<td>
<p>✖ Not great for printing detailed parts</p>
</td>
</tr>
<tr>
<td>
<p>✔ Low warping</p>
</td>
<td>
<p>✖ Bonds strongly to the print surface</p>
</td>
</tr>
<tr>
<td>✔ High temperature-resistance</td>
<td>
<p>✖ Soluble in dangerous chemicals</p>
</td>
</tr>
<tr>
<td>✔ Water and humidity resistant</td>
<td>
<p>✖ Supports are hard to remove</p>
</td>
</tr>
</tbody>
</table>
<h3>Best use</h3>
<p>PETG is used universally but is especially suitable for mechanical parts for both indoor and outdoor use. We use PETG to print parts for our printers! Plastic bottles are also made from this kind of material.</p>
<h3>Tips for successful printing</h3>
<p><strong>Temperature settings and cooling</strong></p>
<p>Unlike PLA, <strong>PETG requires a heated bed (85 °C).</strong> Its bridging- and overhang-behavior is usually worse, plus it is prone to stringing. Stringing can be moderated with higher retractions and lower nozzle temperature, but we suggest <strong>using the PrusaSlicer profiles that should work fine.</strong> It’s important to <strong>cool the PETG print</strong> - this helps to keep the model detailed and prevents stringing and oozing. But if you want the model to be as tough as possible, try to turn off the print fan. Higher filament temperature improves merging between layers which leads to better mechanical resistance. Otherwise, we recommend printing the first few layers with the print fan off to prevent deformation, then with the fan running at half its power.</p>
<div class="warning-callout"><strong>Do not print on the smooth PEI sheet</strong> as the adhesion may be too strong!</div>
<p><strong>Print surface preparation</strong></p>
<p>Make sure the print surface is clean, as described in <a href="http://help.prusa3d.com/article/first-layer-issues_1804">our dedicated article</a>. It is advisable to use one of the <strong>powder-coated print sheets. Do not print on the smooth PEI sheet</strong> as the adhesion may be too strong! If you decide to use the smooth PEI sheet anyway, apply a glue stick on it before printing.</p>
<p><strong>Adding more perimeters for more solid parts</strong></p>
<p>If you want to print truly solid parts, <strong>try to increase the number of perimeters</strong> instead of adding more infill.</p>
<h3>Postprocessing</h3>
<p>PETG can be easily sanded both dry and wet.</p>
<p><strong>Dissolving PETG</strong></p>
<p><strong>Dissolving and smoothing PETG</strong> is possible only in a laboratory by skilled lab workers using <strong>dangerous chemicals</strong> (Dichloromethane).</p>
<h3>Sample prints</h3>
<table style="border-collapse: collapse; width: 100%; height: 954px;" border="0">
<tbody>
<tr style="height: 300px;">
<td style="width: 48.805%; height: 300px;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-1-1.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-1-1-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-1-1-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-1-1-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-1-1-768x768.jpg 768w" alt="" width="800" height="800"></td>
<td style="width: 48.805%; height: 300px;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-jet-black-1kg.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-jet-black-1kg-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-jet-black-1kg-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-jet-black-1kg-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-jet-black-1kg-768x768.jpg 768w" alt="" width="800" height="800"></td>
</tr>
<tr style="height: 18px;">
<td style="width: 48.805%; height: 18px; text-align: center;"><em>MMU (Multi-Material Unit)</em></td>
<td style="width: 48.805%; height: 18px; text-align: center;"><em>Electronics cover and other printer parts</em></td>
</tr>
<tr style="height: 300px;">
<td style="width: 48.805%; height: 300px;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-2.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-2-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-2-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-2-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-2-768x768.jpg 768w" alt="" width="800" height="800"></td>
<td style="width: 48.805%; height: 300px;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-3.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-3-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-3-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-3-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-prusa-orange-1kg-3-768x768.jpg 768w" alt="" width="800" height="800"></td>
</tr>
<tr style="height: 18px;">
<td style="width: 48.805%; height: 18px; text-align: center;"><em>Ukulele</em></td>
<td style="width: 48.805%; height: 18px; text-align: center;"><em>Various mechanical parts</em></td>
</tr>
<tr style="height: 300px;">
<td style="width: 48.805%; height: 300px; text-align: center;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-1.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-1-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-1-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-1-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-1-768x768.jpg 768w" alt="" width="800" height="800"></td>
<td style="width: 48.805%; height: 300px; text-align: center;"><img decoding="async" loading="lazy" src="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg.jpg" sizes="100vw" srcset="https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-400x400.jpg 400w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-600x600.jpg 600w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-300x300.jpg 300w, https://cdn.help.prusa3d.com/wp-content/uploads/prusament-petg-urban-grey-1kg-768x768.jpg 768w" alt="" width="800" height="800"></td>
</tr>
<tr style="height: 18px;">
<td style="width: 48.805%; height: 18px; text-align: center;"><em>Electronic parts</em></td>
<td style="width: 48.805%; height: 18px; text-align: center;"><em>Boxes and organizers</em></td>
</tr>
</tbody>
</table>


PETG

Original Prusa i3 MK3/MK3S/MK3S+ to MK3.9 upgrade

Assembly manuals

Basic calibration

Advanced calibration

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

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

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

Troubleshooting

Nozzles

Octoprint

Learn about different nozzles, Raspberry Pi connection, Octoprint and more.

3rd party accessories & Other projects

About PrusaSlicer

Configuration and profiles

User interface

Input/output

Top toolbar

Print settings

Filament settings

Advanced features

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

PrusaSlicer

1. Introduction

1a. Parts check

1b. Printer disassembly

1c. Parts preparation

2. Frame assembly

3. X-axis & X-carriage assembly

4. Z-axis assembly

5. Nextruder assembly

6. xLCD assembly

7. Y-carriage & Heatbed assembly

8. Preflight check

Manual changelog MK3.9 upgrade

<p>As soon as the melted plastic leaves the nozzle, it's no longer under the precise control of the extrusion system. There are two problems to consider:</p>
<ol>
<li>Printing must always be done on an <strong>already solidified layer</strong>, otherwise, the previously extruded plastic will be moved around and distorted by the new layer</li>
<li>When printing <strong>overhangs</strong> or <strong>bridges</strong>, it's important to freeze and solidify the plastic in place as soon as possible. Otherwise, the filament will sag down.</li>
</ol>
<p>Most 3D printers come with a dedicated <strong>print fan</strong>. By blasting ambient air at the extruded filament, the cooling can be dramatically improved. However, with some materials, this could make things actually worse and cause warping or layer separation. PrusaSlicer lets you adjust the cooling settings for each filament.</p>
<h4>Keep fan always on</h4>
<p>The print fan will always maintain at least a minimum speed. <strong>This setting is typically on</strong> for most materials with the exception of ABS, ASA, PC, and some flexibles.</p>
<h4>Enable auto cooling</h4>
<p>When enabled, the cooling fan and print speed will change during the print based on the settings below. A text description below will <strong>update with every change of any cooling setting</strong> and will explain in detail the resulting cooling behavior.</p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2024/07/c3e0f8af741ce8d43517b269666d6bb5.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Cooling REVIEW" alt="" width="700" height="505" loading="lazy" /></p>
<p>When disabled, the print fan will run at a fixed speed the whole time defined by <strong>Fan speed - Min</strong> with the exception of bridges, which can still be defined by <strong>Bridges fan speed</strong>.</p>
<h3>Fan settings</h3>
<h4>Fan speed</h4>
<p>You can set <strong>Min</strong> and <strong>Max</strong> fan speed as a percentage of the fan's max RPM. </p>
<p>The <strong>Max</strong> value will be used when the layer print time is below the <strong>Slow down if layer print time is below</strong> value.</p>
<p>The <strong>Min</strong> value will be used when the layer print time is longer than <strong>Enable fan if layer print time is below</strong> value.</p>
<p>If the layer print time is between these two values, the fan speed will run <strong>proportionally</strong> at a speed between the <strong>Min</strong> and <strong>Max</strong> value.</p>
<p>This may seem a bit confusing, but you can use the live-updating text description above Fan settings, which will hopefully make everything clear. Try changing the values and see how the description changes.</p>
<h4>Bridges fan speed</h4>
<p>Overrides the fan speed with set value when printing <strong>bridges and overhangs</strong>. Typically you'll set this to a higher value compared to normal printing.</p>
<h4>Disable fan for the first X layers</h4>
<p>Cooling the very first layer is usually <strong>not necessary</strong>, as it's being laid on a flat surface. With many filaments, you may even want to skip cooling for a few more first layers (typically between 1-5) to prevent warping and detaching the print from the print bed, which would inevitably lead to a ruined print.</p>
<h3>Dynamic fan speeds</h3>
<p>The setting enables and controls dynamic, variable fan speed in function of the overlap percentage. </p>
<p>The overlap percentage represents the overlap of extrusion with the previous layer. A 100% overlap is a full overlap (no overhang), while a 0% overlap represents a full overhang (floating extrusion, bridge). </p>
<p>The input fan speed values represent the percentage of the fan's max RPM. </p>
<p>Fan speeds for overhang sizes in between are calculated via linear interpolation. </p>
<p><img decoding="async" style="display: block; margin-left: auto; margin-right: auto;" src="https://cdn.help.prusa3d.com/wp-content/uploads/2024/07/92654b09a66c9d2587f65cae1b76f073.jpg" sizes="(min-width: 1024px) 820px, 100vw" srcset="Cooling REVIEW" alt="" width="700" height="494" loading="lazy" /></p>
<h3>Cooling thresholds</h3>
<h4>Enable fan if layer print time is below</h4>
<p>If the layer print time is estimated below this number of seconds, the print fan will be enabled and its speed will be calculated by interpolating between the Min and Max speed.</p>
<h4>Slow down if layer print time is below</h4>
<p>If the layer print time is estimated below this number of seconds, the print move speed will be slowed down to extend the duration to this value. The slowing is done by scaling the print speeds, so some moves will still be faster than others.</p>
<h4>Min print speed</h4>
<p>The minimum speed that PrusaSlicer will scale the speeds down to. Printing at extremely low speeds for extended periods of time could lead to problems such as heat creep.</p>
<p>Keep in mind that by raising this value too high, you may partially invalidate the minimum layer time set by <strong>Slow down if layer print time is below</strong>. Because even when printing at this minimum speed, the layer time might be shorter than the set value.</p>


Cooling


<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>Input Shaper and Pressure Advance</li>



<li>PrusaSlicer 2.6.0 and print profiles</li>



<li>G-code compatibility</li>



<li>Support for MK3.9</li>



<li>Language translations</li>



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


5.0.0


<p>Updated with instructions for MK3.9 upgrade</p>


1.03


<ul>
<li>Changes to self-test</li>



<li>Extended Connect Wizard</li>



<li>Timeout for G-code M115</li>



<li>Updated bootloader</li>



<li>Fixed bugs</li>
</ul>


5.0.1


<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>Printing speed boost with Input Shaper and Pressure Advance (XL and MINI)</li>



<li>Major updates to network code; Instant Printing feature</li>



<li>Major updates to Prusa Connect and network communication</li>



<li>Introducing a new efficient open-source Binary G-code format</li>



<li>New useful pre-print screen for XL Multi-Tool printers</li>



<li>Cancel object directly from the printer’s menu</li>
</ul>


5.1.0


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



<li>Wipe tower weight</li>



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


2.7.1


<ul>
<li>Sending crash dumps to Tech support</li>



<li>New bootloader 2.3.4</li>



<li>Firmware flashing updated</li>



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


5.1.2


<ul>
<li>Printer type check on startup</li>
</ul>


5.1.3


<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>Touch support</li>



<li>Stuck filament detection</li>



<li>Stealth mode</li>



<li>MMU3 support</li>



<li>MMU3 firmware auto-update</li>



<li>Cold Pull</li>



<li>Time Zone settings updated</li>



<li>Improvements by the Prusa community</li>



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


6.0.0


<ul>
<li>Japanese language support (MK4, MK3.9, MK3.5, XL)</li>



<li>Nozzle cleaning repaired (MK4, MK3.9, XL)</li>



<li>Acceleration limit restored (MK4, MK3.9, MINI)</li>



<li>Stealth mode corrected (MK4, MK3.9, MK3.5, XL)</li>
</ul>


6.0.1


<ul>
<li>Improvements by Prusa community</li>
</ul>


6.0.2


<ul>
<li>Interim solution of USB disconnect issues (MK4, MK3.9, MK3.5, XL)</li>
</ul>


6.0.3


<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

6.0.4


<ul>
<li>Support for MK3.9S and MK3.5S printers</li>



<li>Numeric keyboard</li>



<li>Custom names for steel sheet</li>



<li>User-configurable hostname</li>



<li>Binary G-code check</li>



<li>ESP firmware flash during boot (MINI, MK3.5/S, MK3.9/S, MK4/S)</li>



<li>New bootloader 2.3.5</li>



<li>Network Status screen</li>



<li>Steel sheet name in footer (MK3.5/S)</li>



<li>Powered Z-motors during calibration procedure (MK3.5/S, MK3.9/S, MK4/S)</li>



<li>Default nozzle diameter set to 0.4 (XL)</li>



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


6.1.2


<ul>
<li>Issues with numeric keyboard repaired (MK4/S, MK3.9/S, MK3.5/S, XL)</li>



<li>Returned nozzle diameter setup (XL)</li>



<li>Printhead position during calibrations changed (MK4/S, MK3.9/S, MK3.5/S)</li>



<li>Cold pull (XL)</li>
</ul>


6.1.3


<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>


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