Horizontal Multi-Spool Filament System

Tired of swapping out spools of filament from my single spool holder, I designed this horizontal spool system for the Taz 6. My present config accommodates four spools.

It's brutally simple and doesn't require much explanation: Use the single-sided holders for each end, and the double-sided holders in the middle. I attach all the holders to my Taz with M5 x 12mm socket head cap screws and M5 t-slot nuts.

The 94mm axle works for all the spools I have on hand, but if you print a lot with n