A simple spool holder. Designed to screw below shelf. Tested with spools with 34mm width and 70mm diameter.
Rod can be printed with 0% infill.
Screw holder in, put wire spool in, insert rod. Then secure rod with hot glue.
Hot glue can be dissolved using isopropyl alcohol when you need to replace the spool.
The author marked this model as their own original creation.