The file 'Spool, Fully Parameterized 3D Printer Model' is (stl,f3d,xlsx) file type, size is 360.1KB.
This spool model is fully parametrized (Fusion 360 file enclosed).
The spool will print without any support structure, see paragraph "design"
The hexagon hole facilitates winding up filament/wire/yarn:
Spool.stl | 355.6KB | |
Spool_param.f3d | 199.5KB | |
Spool_param.xlsx | 87.0KB |