Filament Spool Hub Adapter to 56mm

thingiverse

This is a simple adapter for newer filament spools with a rim opening of 56mm and larger inner diameter (see photo). The attachment is designed to eliminate the difference between the rim opening diameter and the inner diameter, effectively making the spool have a constant bore diameter of 52mm. This is useful when the spool spins on bearings. The adapter is reusable between filament rolls. Simply pop it out of one and push into another before printing. You only really to print one. Print in PLA+ or ABS for strength.