The Rapman Y motor has 2 belts : one on the left and one on the right.
This Y belt holder is for the right side one.
I just modified Bogdan's original design to include 2 square holes so the screw nuts are held in place making it much easier to tighten the belt.

Here they are in SU :

And here they are, mounted on the machine :

Curiously only the right side has been redesigned, I don't know why.

I think I'm gonna correct that injustice and design the Y belt holders for the left side too...

This thing can now be downloaded from here.
Please leave a comment or at least a "like it !" if you do...