For my new Printer i needed a better Spool holder.
Since i had different sizes i created a universal spool holder.
Works with Spools from 18 - 56mm Inner Diameter.
You will need 2 Bearings (select STL)
606ZZ (i: 6mm / d: 17mm / w: 6mm)
608ZZ (i: 8mm / d: 22mm / w: 7mm)
Mount on a 6/8mm Rod.
You can adjust the pressure with the M6/M8 Nut.
Print with 0% infill so the Holder will be hollow, works best with ABS/Nylon.
PLA, choose 50% since the material has not the best strenght.
use a vice to press ball bearings in to the spool holder.