3D printer belt tensioning tool

"Tight" can be all over the place depending on who's doing the tightening.
I made this tool to help you get your 2mm belts close and consistent. I am using it on a Prusa mk3, but it will work with other printers if using the same type and size belts.
This should help you get the belt tension on a mk3 and mk3s somewhere between the 240-300 that's recommended.

Heres the how to video.
https://rumble.com/vf89et-3d-printer-belt-tensioning-tool.html

Print instructions

I used Prusament PETG, but I think any PETG should be close enough.

Print with 3 perimeter and 100% rectilinear infill.

(See picture) the "arms" should only have perimeters.