Hatchbox filament empty spool paint holder

thingiverse

The "spool connector" slots neatly between two "spool paint holders" for efficient stacking. To enhance stability, some users opt to glue theirs, although this may not be entirely necessary. The holes drilled into the spool will need to be tailored to accommodate the specific paints being used. Note that this design is specifically engineered to fit Hatchbox filament spools, but it can likely be adapted to suit other types of spools as well.