Geeetech A10M belt tensioners (X and Y)

These X and Y axis belt tensioners will give you better control over your belt tension, for example to reduce artifacts like ringing or layer shifts.
They are also much easier to print than some of the very fancy designs out there, that require you to print screws sideways.

This is a remix from two sources from different authors. Check the info.
What I changed is to add screw holes that allow you to fixate the tensioners to the extrusions. You can reuse the original T-nuts, as well as M4 an