It's difficult to adjust the tension when it's in an enclosure, so I added a screw so that you can easily adjust the tension even if there's a wall on the left.
Requires a DIN562 M3 square nut like the original mod.
October 16, 2023 Data has been slightly revised. If you print the screw size as is, it should be fine.
January 14, 2024 The retainer's XZ-axis adjustment screw hole was returned.
The author remixed this model.
Changed so that belt tension can be easily adjusted.