Filament roller

The base consists of 2 threaded rods M8, on which rollers are inserted from plastic tube with neck TG1232B (outside diameter 32mm, inside 29mm).
The tube is cut to a length of 95mm and a printed ring with 608 bearing (diameter 22mm, inside 8mm, thickness 7mm) is fitted from each side.
The rollers are slid onto the threaded rod and there is a flat washer between them.

As the worms would bend, I printed the supports that are anchored to the upper shelf via the M4 worm. The supports are always placed on three rolls and are designed for pitch 120mm M8 screws.