I don't remember why I designed this spool holder while there are many available, probably couldn't find a customizable one and some dimensions didn't match.

At any rate, recently I had to reprint it and after digging out the scad file I thought I'd publish it, so here it goes. It takes four bearings, four M3 screws and four nuts to make one. You can go customize it beyond using M3 screws, but for that you'll need to go into openscad, not just customizer.

The source is also available in the repository at https://gitlab.com/parts/spoolery