I had issues with the original design in the Original Prusa enclosure. It wasn't wide enough, so the spool wouldn't spin properly and would bind.
I also had the ABS split when I put on the original stick, so made that a bit larger on this design.
Added angles to avoid supports if you print flat side down.
I used ABS as it is inside the original Prusa enclosure and PLA goes a bit funny after a long time. Black ABS is now my go to anyway with enclosure.
Thanks to BastiiF for the original design.
The author remixed this model.
In this one, I've increased the thickness of weak points in the original. I also added the angles so it can print flat side down. The original had 2 break, but this one has been going strong since I got the enclosure.