UPDATE (10/17/23): I've added a set with about 6mm removed. I realized that I designed the weight around my AMS, which has the hydra mod. This newer version fits more snug to the sides of a Bambu spool and has thinner end caps that won't rub on the guides of the AMS.
INITIAL RELEASE: This is a spool weight/desiccant holder designed to add either 400g of weight or a container full of desiccant to your spools. The design was made in shapr3D and was modelled to fit the Bambu Lab Spools in order to prevent issues when using the AMS. The diameter at the center of the spool is 52.4mm, so it should fit a range of spools. With batteries, the weight adds approximately 400g of weight, which I'm finding works great for preventing AMS feed related issues and spools skipping. The center is open with slots for desiccant to work and includes a center guide for adding batteries instead.
I use adaptive layer height, but 0.2mm should work just fine.