The file 'Cardboard Spool Stabiliser 3D Printer Model' is (stl) file type, size is 24.5KB.
I sometimes have issues with cardboard spools - when they only have a little filament on them they become prone to climbing off the spool holder - this sleeve is a loose fit and pushes together in the spool to provide more surface area to be in contact with the spool holder
holefiller.stl | 62.6KB | |
holefiller.stl_2.stl | 37.6KB |