Filament spool reducer hub

thingiverse

These hubs enable you to adapt large filament hubs to small diameter stands by converting them. They get attached to a filament spool using elastic cord that secures on one side with a knot, or you can use zip ties for a more permanent installation on a spool. This specific shape has a 51mm larger diameter and a 24mm smaller diameter than the original stand size. If there are other popular sizes I can upload different variations, just let me know!