CR10 spool holder

Needed a spool-holder for 20mm a spool, so i made a friction fit for the original spool holder. Just push it thru the original holder, hang the filament and start printing.

Due to the retention heel on the outer part being "a bit small" on my first version there's a updated (threaded) version with a nut to make sure that the spools stays on that's not shown in the pictures.

No need for supports print with +50% infill