One/Two/ThreeUP X Belt retrofit

thingiverse

No more wear and tear on your X Belt with the One-Two-Three or any other setup requiring a NEMA 17 Footprint to secure a belt to. The files available here make it possible to switch over to a easily replaceable, Open-ended GT2 belt. Check out this link for images showing how the tensioner works. You can still use a spring tensioner as long as it doesn't block the path of travel. When it comes to the Carriage, I employed one of the most well-liked designs and trimmed down the backside slightly to ensure everything fits snugly. After removing the carriage, install your new open-ended belt around the Idler and pulley. Next, slide the belt into the clamp and secure it in place. Make sure it's tightly wrapped with minimal slack. Once you've secured the belt, place the carriage on the bearings and align the belt clamp with the carriage. Pass screws through them and construct your extruder. I borrowed this design after I first saw it - I was immediately smitten with its functionality, particularly the awesome clamp! You can check out the source code here: https://www.thingiverse.com/thing:587659 UPDATE Added a V2 belt clamp when assembling my model, I inadvertently managed to break one of the belt keepers off. This updated design allows for increased rigidity. Print either version with a High infill and/or extra shells/perimeters for improved strength. UPDATE The box on the clamp was slightly too large and ended up rubbing against the belt. I've revised it to V3, and in my second iteration, noticed that if you use a screw longer than necessary in the mount, it can snag on the edge of the belt as it moves along its path.