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Parametric Inverted Y Motor Mount for MendelMax

by cobra18t, published

Parametric Inverted Y Motor Mount for MendelMax by cobra18t Feb 3, 2013
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4787Views 981Downloads Found in 3D Printer Parts

Summary

This is a replacement Y motor mount for Mendel Max printers, although it could be modified to work with other aluminum extrusion frame printers.

Advantages over stock part:

  1. Full 4 hole mounting for strength

  2. Motor can be mounted with thermal tape or thermal grease contacting aluminum extrusion to act as heat sink. (note thermal grease in 4th image above)

  3. Inverted nature puts compressive stress on support elements rather than stress which acts on delaminating layers.

  4. Fully parametric with OpenSCAD source provided

  5. I like curved supports

Instructions

  1. print (I would not recommend PLA for motor mounts since motors can get quite warm and PLA gets soft)

  2. use 4 m3 screws to mount motor (motor goes on opposite side from curved supports so that the belt travels between the m5 mounting pads)

  3. put thermal tape or grease on motor side to contact aluminum extrusions (note thermal grease in 4th image above).

  4. mount assembly to extrusions with m5 screws

  5. adjust belt tension as necessary since motor is closer to extrusion

OpenSCAD editing:
This uses configuration.scad.dist and functions.scad from Prusa's i3 project. These must be in the same folder as YMotorMnt_INV.scad. These files are found here:
https://github.com/josefprusa/Prusa3.

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Works great! I made mine with PLA, no issues yet but then my stepper is barely warm to the touch.

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