Prusa i3 MK3S Y axis motor mount

thingiverse

Beefed up Y-axis motor mount for the i3 MK3S with built-in end stop. This design is based on teookie's design for the MK3: https://www.thingiverse.com/thing:3437722 Compared to the MK3 design the "STOP" plate on the top is located 1.5mm further back to avoid calibration issues on the MK3S. The advantage of this design is that the linear bearings won't hit the backplate of the frame anymore to mark the back end of the Y axis. Instead, the belt holder under the Y carriage will hit the "STOP" part of the Y motor mount which puts less stress on the bearings. This mod also works well with KalleKnall's Y axis linear rails upgrade: https://www.prusaprinters.org/de/prints/5620 ===Nuts and bolts needed=== Motor to mount 1x M3 x 10 (reuse from stock) 2x M3 x 25 Frame to mount 1x M3 x 10 (reuse from stock, upper hole) 1x M3 x 12 or 14 (lower hole) 2x M3 lock nuts (reuse from stock) Please note: If you end up with your pulley situated all the way to the left and the belt still rubs on the rim of the pulley, you can slice a 1mm part of the bottom of the holder to create a spacer. (It's included this way in the 3mf file). Thanks to Ulrich Hornstone for this idea: https://www.prusaprinters.org/de/social/58726-ulrich-hornstone