Customize Rotary Sander

Created at theOpenScad and can be converted to Customizer, but use external library:

threads.scad - https://github.com/verhas/OpenScad/blob/main/threads.scad

After downloading, you can use the customizer.
However, remember about the need a threads library.

Increase the width of the groove for thick sandpaper
I recommend sticking tape on the back of thin sandpaper

Use washers to fix the strips from falling out.