Basic Sandpaper Stick.

Cura Slicer estimates about 51 minutes to print.

I needed a simple sandpaper stick, so I made this. It has a slot to put the edge of a piece of sandpaper into, then you wrap it around the stick, and you have a sanding block.

Possible improvements could be the width of the slot to fit the sandpaper. It may be a little loose-fitting right now (I haven't noticed any issues, however).