This is a remix of the “Adjustable Spool Holder for Silica Gel / Spool Weight” by humebeam.

I made the air holes solid so you can fill it with whatever you want to add weight to your spool for the AMS. It's printed in PETG so you can melt down your PLA waste and fill it up. I had a 50 pound bag of sand leftover from another project that I bought at Home Depot for $6.20 which I used. It came out to about 146 grams or the equivalent of 4 AA batteries.

I am using this JAYO spool adapter:

https://makerworld.com/en/models/55737?from=search#profileId-57266