This allows you to clamp the XY Belts (GT2, 6mm but might work with wider belts as well if the teeth are the same) with one M3 screw of the X-rail (might need to use a longer one) for easier installation or changing parts without having to watch out for the belts going wherever they want.
The plain block goes behind the belts, the teethed block in front
It clamps down to nice and secure on both belts at once without squishing them excessively (check pic for referencce, there is only a tiny gap between the blocks - that's the max squish on the belt when fully tightened. About 0.2mm, depending on belt thickness)
This is designed to only slightly clamp the belts but relying mostly on the teeth to stop slipping, as it should be, unlike other designs, which are just flat clamps that solely rely squishing the belts excessively to keep them in place.
Elongated screwhole to allow for precise positioning without having to pull the belts.
The author marked this model as their own original creation.