I have been using Polymaker for years but I have always hated the cardboard reels since they started using them. I have had nothing but issues with the cardboard reels, Voksbug is correct when stating that they are all different sizes. I have two AMS boxes with 8 reels of Polymaker filament and not two of the cardboard reels are the same size. Some of Polymaker’s cardboard reels are too large to put on an outer ring for the AMS. Some of Polymaker’s reels are different sizes from one side of the spool to the other, which makes them wobble.
Polymaker should go back to their great plastic reels they use to have or if, as they claim, they are trying to be environmentally friendly then they should start selling reusable reels and filament refills as Bambu Lab does.
As for the future, I will try to use the electrical tape as suggested and maybe I will try to either rip the cardboard side off and put the filament on a BL reel or do the rewind to a BL reel specially on the wobbly spools.
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