⬢For this chapter, please prepare:
⬢2.0mm Allen key for tightening the grub screws
⬢2.5mm Allen key for most of the M3 screws on the assembly
⬢3mm Allen key for M5 screws used on the frame
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- Original Prusa i3 MK3S/MK3S+ to MK3.5S upgrade
- 4. xBuddy assembly
4. xBuddy assembly
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- Original Prusa i3 MK3S/MK3S+ to MK3.5S upgrade
- 1. Introduction
- 2. Parts check
- 3. Printer dissasembly
- 4. xBuddy assembly
- 1. Tools necessary for this chapter
- 2. xBuddy box: parts preparation I.
- 3. xBuddy box: parts preparation II.
- 4. Inserting the M3nEs nuts
- 5. Mounting the xBuddy box
- 6. Mounting the xBuddy box
- 7. Mounting the xBuddy box
- 8. Applying the thermal pads
- 9. Mounting the xBuddy board
- 10. Attaching the zip ties
- 11. Haribo
- 12. It's done
- 5. xLCD & PSU assembly
- 6. Heatbed upgrade
- 7. Extruder & connectivity upgrade
- 8. Preflight check
- Manual changelog MK3.5S upgrade
4. xBuddy assembly
Relevant for:
Last updated 4 months ago Difficulty
Moderate Steps
12 Available languages
⬢For the following steps, please prepare:
⬢xBuddy box (1x)
⬢Thermal pad 40x12x2.2 mm (1x) can be found in Buddy & Extruder assembly bag
⬢Thermal pad 12x12x2.2 mm (2x) can be found in Buddy & Extruder assembly bag
⬢M3x6 screw (9x)
⬢M3x10 screw (2x)
⬢M3nEs nut (2x)
The list continues in the next step...
⬢For the following steps, please prepare:
⬢xBuddy board (1x)
Always touch the sides of the electronics board while manipulating it. Avoid touching the chips, capacitors and other parts of the electronics.
⬢Zip tie (4x)
⬢X-holder (1x)
⬢Insert the M3nEs nut into the left short extrusion (side without the PSU). Insert the side with the spring (metal plate) first.
⬢Push the entire nut inside the extrusion using your finger.
⬢Use this method for both M3nEs nuts. The exact position of the nuts doesn't matter at this time.
⬢Turn the printer so that the extrusion profiles with shorter lengths are facing towards you.
Most of the following pictures are taken on the latest version of the printer frame. The frame has hexagonal recesses on its back side. This is just a design element. The latest frame design is functionally identical with the previous ones.
⬢Insert four M3x6 screws to the back of the frame (side with shorter extrusions), so they resemble a rectangular pattern. Tighten the screws fully into the frame to clean the threads. Then loosen the screws, leaving a gap of at least 3 mm between the screw head and the frame.
Make sure you are using the correct holes.
⬢Insert two M3x10 screws into the M3nE nuts in the second short extrusion (right from the rear view). Turn them only 3-4 times by using a 2.5mm Allen key, just for the screws to be kept in place.
⬢Attach the xBuddy box on the M3x10 screws in the extrusion. Do not tighten the screws at the moment!
⬢Slide the xBuddy box to the frame and attach the box to all 4 screws in the frame. The screws must fit into the top part of the "key" hole. See the detail.
⬢Fully tighten all four M3x6 screws to secure the xBuddy box.
Be careful when tightening the "rear" top screw. Use the shorter side of the Allen key for final tightening.
⬢Fully tighten both M3x10 screws in the M3nE nuts.
⬢Peel off the white protective layer from all thermal pads.
Always touch the sides of the electronics board while manipulating it. Avoid touching the chips, capacitors and other parts of the electronics.
⬢Attach the pads onto the back of the xBuddy board. There are markings that indicate the correct size and positions.
The surface to which the pads are sticked must be cleaned of grease. This will ensure better adhesion.
For the protection of the board's electronic components, we strongly recommend placing the xBuddy board on the soft pad. You can use the original xBuddy bubble wrap package.
⬢Peel off the blue protective layer from all thermal pads.
⬢For better access to the xBuddy box, carefully place the frame on the side with the PSU.
⬢Insert the xBuddy board into the xBuddy box. Before fully attaching it completely, center the holes in the board with the holes (columns) in the xBuddy box
⬢Fix the position of the xBuddy board by inserting five M3x6 screws. Do not fully tighten the screws. A few turns are enough for now.
Put aside your instinct and leave the hole on the bottom right empty.
⬢Fully tighten all five screws. But very carefully, otherwise you can damage the electronics board.
⬢Take a closer look at to the xBuddy box. There are four perforations on the metal case.
You can place the frame on the PSU side for better access to the xBuddy box.
Proceed very carefully. Be careful not to damage the connectors or capacitors on the xBuddy board.
⬢Use the X-holder as a zip tie guidance. Place the X-holder behind the lowest perforation like in the picture. Push the zip tie through the protrusion to the X-holder. Keep protruding 3 - 5 cm of the zip tie from the perforation.
Note the correct orientation of the zip tie. The teeth on the zip tie must be on the visible side.
⬢Use this procedure for all four protrusions.
⬢Place the printer back on its "feet".
Carefully and quietly open the bag with the Haribo sweets. High level of noise might attract nearby predators!
⬢Spread the entire contents of the bag on a clean plate and arrange them according to the picture. The color doesn't matter that much.
The total number in your package may vary slightly. However, the exact number is important. If any gummy bears are missing, please go to your nearest candy store immediately.
⬢Eat ten gummy bears.
Did you know that gummy bears were first created by a German candy maker named Hans Riegel in the 1920s.
⬢The xBuddy box is successfully assembled and mounted to the printer.
⬢Let's go tho the next chapter 5. xLCD & PSU assembly
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