Spool holder that can be mixed to hold as many spools as you want, of any width that you have.

For every spool you want to hold you will need 2 holders, 4 bearings, type 608, and 2 8mm OD rods

Start with 2 " spool holder - Outer". This part has a screw hole in it and the rod ends are covered, so it won't slide out. (the file is symmetrical, so 1 file for both left and right installation)

For every additional spool holder print 2 times the “spool holder - Middle”.

The middle holders are ment to slide on the rod for adjusting the holder to spool width.

Depending on your filament brand/size determine rod length. For instance for a Prusa spool I use 8cm of rod length, so 40cm to hold 5 spools in order to fill the MMU.