Prusa i3 MK2 Y motor mount mod (damper + robustness)

thingiverse

Tested with EMVIO NEMA 17 dampers Update 11/12/2016 Added a V2 (wider). It seems that no matter how hard you try, the part (and thus the motor) will eventually bend if you print the mount with PETG. I can then only sugget to print the V2 with ABS, 80% cubic infill. ------ Standard Y-motor mount of Prusa i3 MK2 suffers from 2 problems: only 2 screw points don't allow the installation of a NEMA17 damper; the mount is a bit flimsy; after some days, the motor bents slightly and causes the belt to slip over the pulley border (see photo). Not that big problem I know. Note that the X motor mount doesn't bend, and it's 17mm wide against 10mm of the Y motor mount... Some other projects and things fix the first problem: http://www.thingiverse.com/thing:1837853 https://www.tinkercad.com/things/iJrjFo03urM-y-motor-damper An additional part from Prusa fixes the second problem: https://github.com/prusa3d/Original-Prusa-i3/blob/MK2/Printed-Parts/stl/Y-distance.stl The two solutions, however, don't work well together, because the Y-distance would actually add a coupling surface from the motor to the printer, reducing the effectiveness of the damper. This thing tries to fix both problems in one shot: 1) a bracket for third screw is added; 2) the overall width of the part is increased from 10mm to 12mm, so no Y-distance part is needed, supposing the added roubstness will make it stiffer (to be tested); 3) the original SCAD file is used. Print Settings Printer Brand: RepRap Printer: Prusa i3 MK2 Rafts: No Supports: No Resolution: 0.20 Infill: 80% cubic Notes: print with ABS (no PETG - it will bend) Post-Printing The same original M3x10 screws can be used.