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Prusa i3 MK2 X-Ends remake — image 1
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Prusa i3 MK2 X-Ends remake

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I recently purchased some POM nuts from RobotDigg, but noticed they only had 3 mounting holes.

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Model information

License
GNU General Public License v2.0

I recently purchased some POM nuts from RobotDigg, but noticed they only had 3 mounting holes. Since I am running a custom MK2 clone, I wanted something close to the original with little modification,

Enter the new x ends. This is a modification of the x-ends from the prusa openscad files to include a 3mm hole on one side (normal) and a 2mm hole on the other.

With the help of a small hand drill, you can pop a new hole in the 3 holed POM nut without compromising its structural integrity.

Needed:
2x POM nuts from RobotDigg. (25.4mm flange, 19.05mm center-to-center screw hole spacing, 12.7mm OD of throat for leadscrew)
2x m3x12 screws
2x m3 nuts
2x m2x12 screws
2x m2 nuts
(+Other screws/parts/etc that make up the Prusa X-Ends)

Included are my modifications to the x-ends.scad file, and resulting STLs for the ends. As well as modifications to the leadscrew covers with modified screws for TR8x2, TR8x4 and TR8x8 leadscrews.

I also added in comments and variables for anyone wishing to tweak settings.
You will need to grab a copy of the following files from the Prusa github:
bearing.scad
polyholes.scad
x-end-idler.scad
x-end-motor.scad

Releasing under GNU GPL v3 as that is what the original scad files from Prusa are.

Print instructions

Category: 3D Printer Parts Print Settings

Printer Brand: Prusa

Printer: Prusa Clone

Rafts: No

Supports: No

Resolution: 0.2mm

Infill: 20%

Post-Printing

Drill a hole in the POM nut

Use one of the ends as a guide.

Use a small 1/16in or 2mm drill bit and hand drill a hole in the POM nut after tightening down the m3 screw on the opposite side.

Take your time, and mind the surface under the part (I may have put a hole or two into my counter top)

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