Sample filament adapter for Universal Auto-Rewind Spool Holder

Turns a spool holder hub into a sample filament spool for use with loose sample coils.

Print two plates and one hub extender. Assemble the hub and one plate, and spin them onto the spool holder hub. Insert the end of the filament into the hole on the hub extender. Add the second plate. Then respool the filament from the coil onto the hub so it isn't too loose and doesn't have any tangles.