Slim Y Axis Motor Spacer - Prusa i3 / Migbot

Spacer to straighten the Y-Motor on the Migbot i3. The belt now sits straight on the timing wheel. It will also put a bit more tension in the belt once you do it, because the wheel moves just a bit further back.

Just slightly unscrew the two screws in the back until the motor comes loose and you can slide the spacer in.

You can cut the edges properly, I didn't on mine and now it pushes the motor just a bit in the other side. No biggie though, still a ton better than default.