Taulman Spool - Prusa MK3s Spool Holder Adapter

thingiverse

The Taulman Bridge spools of Nylon have a ridiculously small hole in the center. I reverse engineered the little locking connector bit on the end of the stock spool holder that comes with a Prusa MK3 (and later) and stuck a smaller diameter spool holder rod on there. Print it with the flat edge that runs along the entire part down on your print bed. You'll need to support the locking bit.