Tensioner for i3 pro b

thingiverse

This is an updated version of the Geetech i3 Pro B x-axis modification. In the original, the belt length for the x-axis is too short if you've already cut the belt during assembly like I did. As a result, before switching to a longer belt, you can apply this mod to the tensioner and retain the original belt and roller setup. All you need is a longer 4mm screw - I opted for a threaded rod. You can still tighten the belt using the two screws against the rods.