Hello guys and girls,
The following issue has been keeping me awake for days now.
A regular recurring Z-band, I am not the only one experiencing it. It has gone unsolved before so let's try to straighten it out once and for all.
I have a CR10MAX and a new CR20PRO, I use Simplify3D and Cura, I have printed many kilos of filament and fixed many problems myself before.
I have sliced this chromatic vase with Cura and the CR10MAX does a perfect job, just amazing, absolute perfection.
Now I tried printing it with the CR20PRO, same model, same settings, same everything and these bands show up at the same spot again and again so it should be a hardware issue with my new machine? OR software related difference between these machines.
I have tried everything and I believe the following variables can be eliminated.
Temperature, I have printed many kilos PLA using 185-190.
Speed, I print slow, 900-1200mm/min
Hotbed cooling down causing shrinking causing bands, I tried printing with hotbed on and off
Z-axis bolts and nuts are checked, fully greased rod, filament is not pulling on it.
Bed leveling is perfect, I use a glass plate and BLTouch.
PLA shrinking causing bands, no because the other printer does a perfect job on same settings, I use 100% fan cooling.
Bad quality filament, no I use top quality only.
I use Microswiss nickle plated wear-resistant nozzle.
Checked all other bolts and nuts.
Tweaked all settings I could find on the machine and no difference.
I DO use relative extrusion with a 0.8mm nozzle and 0.32 layer height and spiralized contour aka vasemode.
As you can see these bands are very subtle, but clearly visible, it is recurring at 3 and 4 cm so no regular interval either it seems.
The first band has their layers a bit close to each other, you can feel a bump, the second and third band are only visual, you can't even feel a difference in layer.