Hi all,
How is your experience with cardboard spools?
It seems, with my CFS they have a problem when retracting. As if there is not enough grip to turn the spool backwards when retracting.
Also, I printed rims, but they seem too wide, and also have their own problems, also resulting in bad retraction.
Do the spools touch the holders in the valve ?
No problems with elegoo cardboard spool.
Had some problem with sunlu spools when the are almost empty and the are from plastic. That was because the spools ar smaller and dont touch the valve. You can find stl file to fix that.
Not a ton of experience with it, but I have gone through at least 8 cardboard spools (Polymaker) and have had no issues, even with some of the spools having wonky/bent edges. Not nearly as much dust inside the CFS as I expected, but I still check it and clean out occasionally.
Better to use filament filters with the cardboard spools. Once i found the part of a cardbord in the blocked noozle.