Prusa MK3 Extrusion Mount Locking Cam

thingiverse

This self-locking cam insert enables mounting to the Prusa MK3 Extrusion frame with ease. They slide into the extrusion sideways, securing themselves firmly as you turn the screw clockwise (righty tighty). Once locked in place, they resist spinning around even when tightening the screw further. TIP: Print with a brim and the narrow cone facing downwards on the print bed, just like depicted in the picture. Supports are unnecessary due to the secure design.