Ender 3; X - Belt Tensioner v2

thingiverse

I made v2 smaller to reduce surface area that touches the X rail. It dragged a bit too much, so I saw that adjustment was necessary to update the JPG picture. The belt tensioner is designed to hold its shape over time and not deform. It slides under the x rail with ease. This design is a remix of the thing:1780636 on Thingiverse. You'll need an M3 screw to assemble this part. If you don't have much slack, I recommend printing the "TreyBeltSmaller" first to test it out.