I mostly use the adjustable spool weights (and washers for weird filament rolls) when a roll is getting empty/light, and starts getting issues with the AMS. I've used this merged version on occasion, usually with smaller diameter rolls. I don't find myself using it as much as my bolted version, but that one doesn't currently work with added weights.

Print both halves and the small lid. Fill up with .177 cal BBs for weight (or optional silica beads). Screw on the cap, to seal them in. Place one end over the spool. Screw other side on over the other side of the spool.

Parts

• .177 cal. BB
  • https://www.amazon.com/gp/product/B00419HNBU