Spool adapter ring for Polymaker Cardboard spools like on the Polyterra PLA and Polylite PLA cardboard spools to allow use in Bambu Lab AMS.

Peg in adapter help hold ring in place as spool spins. I had to use the hole by the center of the spool as the holes around the edge were not consistent across the Polymaker spools I had on hand. Ribs on edges help grip the AMS rollers. Filament manufacturer label on inside of adapter.

Please let me know if you have any suggestions.