Prusa i3 MK3 Y-Axis Motor Holder with End Stop

EDIT (2018-12-03) : I NO LONGER RECOMMEND THIS PART for users running recent Prusa firmware; this part adds a small margin of offset from the dimensions of the Prusa design so that the “endstop” impact point will be on this part and not the bearing as in the original design. One user has reported that recent Prusa firmwares detect this offset during XYZ calibration and treat it as an error. It is possible that reducing this offset could resolve this issue, but as I have converted my MK3 over to