HI,
I created this Esun cardboard spool adapter for PETG filament spools. With these adapters you can use cardboard spools in the AMS without causing winding problems or excessive dirt/dust. The adapter has a very thin outer edge (0.4 mm.) and does not cause rubbing problems with the AMS cover. I recommend printing them in PETG so you can put the coils in the dryers and not have deformation problems.