Model adds weight to reusable bamboo spools, for use in the ams,

without interfering with the quick loading of refills and staying flush with the outside.

This version uses 6x screws + nuts as weights: m8 x55 din9784 or m8 x55 din912 + m8 din980.

No supports needed, printed with pla and petg.

See alternate versions:

With Empty Geometry 

https://www.printables.com/model/1103097-bambu-reusable-spool-weighted-insert-solid-geometr/files

With Silica

https://www.printables.com/model/1103257-bambu-reusable-spool-weighted-insert-with-silica