Spool designed to fit Overture and Polymaker thick cardboard spools. I couldnt find any that really worked good with these spools as they would all be to wide for the rollers or rub the sides of the AMS. i designed this one with the absolute best fit. Cant get any thinner and any thicker will rub.i made the ring thin and gave it a little chamfer as well as a lip to go over the cardboard so it fits tighter and has more surface area to ride on the rollers, Threads are nice and smooth. I also designed with intent on filament saving.

I made these with pla plus but any pla should work fine.

Step files included if you want to modify the design.