Belt tensioning balance for original CraftBot

thingiverse

I built this to perfectly synchronize the two belts in my CraftBot by adjusting them to equal tension. It requires a wooden dowel. The printed parts will grip the middle of the pulleys while you can pull the wooden dowel towards the back of the machine using a C-clamp and then secure it with motor holding screws. It was originally designed for a 18x18 mm wood dowel that I happened to have on hand, but you can easily modify the OpenSCAD file to accommodate different dimensions. The length of the wooden piece is approximately 335 mm.