Y Idler with Tightening

An Idler for the Y Axis of Prusa/ RepRap-Like printers.
The belt can be tightened.

The following parts are required:


* 2x 685 Bearing
* 1x GT2 Pulley, mine had 20 tooth
* 2x Washer M5
* M5 axis (a part of a screw will do the job), length 28.4mm (30mm will just be fine)

For tightening:
* 1x M4 Nut
* 1x M4x30 Screw

You can print the spacer, too. It acts like a washer, so the force of the screw is distributed evenly across the threaded rod.