Prusa i3 x-end motor mount with easy Z stop adjuster

This is a modification to Josef Prusa's X-end motor mount. I have added a mount for a M3 bolt to make it easy to tweak the Z end-stop.

Sorry for just posting STL - OpenSCAD crashes when I try to render Prusa's x-end.scad, so I had to resort to doing this in Sketchup.

To use - put an M3 nut on the bottom, put a 20-30mm M3 through the top (spring recommended, probably not required). Adjust!