Dremel 3D20 Filament Holder

This spool holder fits over the top of the Dremel 3D20 and allows the use of most of the larger 1 kg filament spools. This was modified from a version found on GrabCAD (https://grabcad.com/library/dremel-3d20-filament-spool-holder-1) and improvements could still be made. I would probably port the main arm a little more to save filament, but it is very strong and the larger axle piece holds the heavier spools with no issue.

The original design didn't have much for a keeper at the end of the