Universal Spool Holder with ball bearings

Universal spool holder with two ball bearings.
It can fit any spool size, width is adjustable. "Fast change!" between spools, little friction while it spins.

It is componed of:
- Two horizontal printed parts (part1 and part2)
- Two 608zz ball bearings that fits exactly into part1 and part2
- One horizontal 8mm threaded bar and 4 (or 2) 8mm nuts
- One m6x100 hex bolt with a wing nut to keep everthing together

That's it. You need something to hold the 8mm bar in it's horizontal pos