CORE One+ 2kg Twist Adjustable Spool Holder

Inspired by the HT90 and Karkovski's spool holder, this is a simple remix that attaches it to the Core One + Mount.

This requires the O-Ring normally required by the Core One+ upgrade.

Also requires the new Core One+ spool holder mount “Universal Puck”

Has enough friction to work without issue, and not come undone.