Filament clip

I almost feel bad for uploading another filament clip :-)

I liked this idea https://www.thingiverse.com/thing:282242 of a clip that clips to another turn of the filament itself to avoid 'spool compatibility' issue altogether, but the one I downloaded didn't hold on very well to the filament when printed with my printer so I decided to design my own. That should not be more than 5 minutes work anyway...

Four prototypes later that were either too tight or too loose I abandoned the design and