Summary

A simple spool holder using some 5/16" threaded rod, 5/16" bolts, and two 608 bearings.

Instructions

This is another simple spool holder. Simply print two of both stl's. A 608 bearing will fit in the spool ends allowing your spool of filament to spin freely.

-- I used 8" (200mm) of threaded rod. This covers all 1 Kg spools that I have owned.
-- One end I used two locking nuts to hold the spool holder pertinently in place. The other side I used one regular nut and a wing nut to allow for easy changing of the spool.
-- The spool center i have designed fits all spools that i have used thus far.
-- I also attached two adhesive grips (for furniture) on the bottom of each spool holder. This keeps it from sliding all over the place :).

A simple filament spool holder