ExcelFil Filament Spool Clip 1.75mm & 3mm

A practical clip which fastens tightly to the square lip of [ExcelFil](http://3d.voltivo.com) filament spools (excelfil_filament_clip_v2.stl)

It's designed for both 3mm and 1.75mm diameters and conveniently holds the filament end in place when the spool is not in use.

excelfil_filament_clip.stl is designed to fit on spools with a round lip.