The file 'Drill Attachment For Polymaker Spools (55MM) 3D Printer Model' is (stl) file type, size is 27.5KB.
spool adapter for winding filament onto Polymaker spools with ~55mm ID.
It's slightly undersized with the intention to add a layer of tape for extra grip on the spool.
the arbor is a 5/16" bolt
Polymaker_spool.stl | 134.4KB |