This is a remix of the 500g Protopasta Spool and a new 1kg spool remix as well. I also increased the inner hole size to 55mm to allow them to also work on the AMS Lite and accept the centering weights/desiccant holders. I also made a slit in the ring so the filament tail that goes through the cardboard spool can slide inside the spool without being smashed.

I got tired of cutting the cardboard edges and installing edge rings and I've found these to work far better and are much easier and faster to install. They take a little under 3 hours a side on an A1.