Extruder Lever Arm for Monoprice MP Select Mini

thingiverse

Warning: This cover has not been tested yet. Please leave a comment if it needs to be adjusted. This is a direct replacement for the MP Select Mini's extruder arm and cover. After my printer's extruder arm broke just one day after delivery, I found that Makerbot's Replicator 2 extruder design was identical except for bearing size. I modified it in Onshape, and the bearing from the MP Select Mini fits perfectly. If you had to replace other parts besides the arm or cover of the extruder, Makerbot's other parts should fit without any issues. I couldn't find any dimensional differences between my part and the original, but your experience may be different. Please let me know if it works in the comments! Someone reported some model problems with Simplify3d. Cura and Slic3r didn't seem to have any issues with it, but if you do encounter problems, try downloading the "fixed" version and see how it goes. I also included a file with both the cap and the arm. View in Onshape: Arm | Cover (Also available in .step) Print Settings: Rafts: Don't worry about rafts. Supports: You don't need to worry about supports either. Resolution: 0.2mm is a good resolution to start with. Infill: 40%-100% infill is recommended. Notes: The stronger the better, so I recommend 3-4 shells (1.2mm for some slicers), 0.2-0.3mm layer height, and high infill.