The model from "Olli" was a great idea. But I didn't like the screw connection. So I modified the model so that the holders can be glued in (either with double-sided tape, superglue, hot glue, ...). I also made the thread a little thicker at the beginning in the hope of making it more stable. And the screw is now a wing screw. This makes it very easy to tighten and loosen.

ATTENTION: PLEASE ONLY TIGHTEN THE SCREW LIGHTLY! DEPENDING ON THE MATERIAL, THE THREAD MAY OTHERWISE BREAK EASILY. PLA IN PARTICULAR IS VERY SENSITIVE!!!

Please use my print profile! Here the holder is printed with different thicknesses. The screw is solid here!