Clamp Spool Holder

A spool holder clamp for shelves up to 25mm thick.
Adapted from https://www.thingiverse.com/thing:2203997, reinforced and redesigned.
Added a rubber layer for the clamp and rubber ending for the screw, so it creates more friction in the shelf, avoiding that it slides off or damages the shelf itself. The rubber files should be printed in flexible material.
Also designed a smaller clamp for smaller filament spools.
It should be printed with support in a strong material like ABS or PETG, with walls thicker than 1mm and infill higher than 30%.
It should also be printed in the position provided in the STL for resistance purposes, which should avoid layer separations due to the weight of the filament spool.