Y motor torsion box for Prusa Mendel w/625zz idler

Remix of https://www.thingiverse.com/thing:11017/ using a 625zz bearing for the idler. Rebuilding my original printer as the frame vertices had worn out over 8 years of printing, and wanted to solve some of the problems I encountered with that machine along the way.

This is designed so that the shaft of the motor itself is being supported, rather than the belt pulley. Wantai 42BYGHW811 steppers (which I prefer, as they run cooler and have more torque than other steppers I've tried) fit perfec