The Ultimate filament clip

This is the last filament clip you will download and make. It does not clip to the spool. It does not prevent spool stacking. It can be used on any filament and size. It can be used on almost any amount left on the spool. It can be easily modified for 3mm filament, just enlarge it 1.75x to 2x. It slips on-off, no clip-on necessary so no tolerance issues. I am just surprised that this is the first one to use this concept that I am aware of. The filament holds itself with tension and friction beca