Jayo Spool Inner Diameter Reducer

A simple reducer ring to put into spools. I use the ring for re-spooling (with this https://makerworld.com/en/models/728968#profileId-660519) or to add these spool weights for Bambu Lab spools (https://makerworld.com/en/models/474427#profileId-384863). The holes in the ring can be aligned with holes in the spool to tuck in filament for re spooling. Outer diameter is 72.1mm and inner diameter is 54mm. This likely also works for spools of other manufacturers (e.g. SUNLU). If you need other diameters you can use the FreeCAD source file to easily change the diameters.