Version 2: Simple PRINTBED filament cardboard roll adapter ring for Bambu LAB AMS

Version 2: Added small nibs for both inner and outer rings. Grabs the cardboard even better. Also changed the curve design near the hub just for better looks.

I've kept the original version for you to choose.

Printed in PLA works just fine. Expect the AMS lid to sit raised or use a printer lid riser since Printbed filament rolls plus these rings will be too tall for the lid to close.

I have had a roll or two where the cardboard sides are parallel to each other but not centered to each other so the roll sits crooked. Even with the rings, the rolls operate just fine in the AMS.

Print 2 total rings, 3 walls and 4 top/bottom layers, no infill necessary.