About this 3D model
This is an adjustable Y-Axis belt tensioner for the Rigid Bot version 2. You will need a 40 mm M3 screw and nut for the adjuststment portion of the part. Use the two M3 screws that were used to mount orginal tensioner to mount this tensioner to the two tapped holes on the under carriadge. I included a step version of the design so that you can edit it to fit your needs.