Nowadays, we can see more and more cardboard spool holders, they are good for the environment. But I noticed that cardboard spools rotate with much bigger friction on static spool holders. They require more than two times bigger unrolling force. One of the solutions may be the rotating spool holder with inserted two ball bearings. They reduce the load on the extruder, which priority job is to push the filament through the hotend and nozzle. This is very cheap and highly recommended upgrade, not only for cardboard- but also for plastic spools too, due the smoother unrolling during 3D printing.

Rotating spool holder used in the video:
https://www.banggood.com/Creativity-F...

List of all Ender3 upgrade videos:
https://www.mytechfun.com/videos/ende...

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Contents:
0:00 Introduction
0:22 Reason for rotating spool holders
2:18 Test with standard spool holder
3:17 Unboxing
3:45 Assembling
4:38 Test with rotating spool holder
5:33 Results
5:49 Conclusions

#spoolholder #rotatingspoolholder