Promega CoreXY Belt Tensioner

Check the remix here for an updated version by user TheBum:
https://www.thingiverse.com/thing:3409417

This is a really cool, granular way to tension the XY belt on the Promega giant printer, but could be implemented on other machines. Fusion code included, so mod away, makers!
It requires a bit of hardware but makes subtle tensioning a breeze. You will need:

1/4" or M6: 1 - nut, 1 - 1.5" long bolt (the tensioner bolt and nut)
2 - 1/2" or 12mm long M4 or 5 Screws (to attach the knob br