Cl-260 Ultimaker Max carrier belt tensioner for bearing with 12mm outer diameter like most brass, PTFE and POM bearings

Optimized for 24mm long (or two 12mm long etc.) bearings with 12mm outer diameter, like Misumi JZF8-12 (that's what I'm currently using), but does work for other all other bearings with 12mm outer diameter aswell (maaaany brass, PTFE and POM bearings)

Tested with PETG, =40% Infill, 0,2mm layer height, 3 outline perimeters
Works like a charm.

You need one 40mm M3 screw and nut + another M3-Screw (woodscrews are best here) if it need to touch the endstop

Update History:
V1.1 - added se