Spool Holder for 3030 Extrusion

Clip on spool holder for 3030 extrusion. Uses the same 16mm diameter rods as my other spool holder designs. Now also with holes to hold the end of a piece of filament, either 1.75 or 3mm (the 3mm hole is untested - I only have 1.75mm filament on hand)

Update: By request, I've added an 'XL' version of this that should be tall enough to fit the ColorFabb XL spools. I don't have such a spool so haven't tested it myself.