Z banding on abs only.

Hi there. Right now I'm trying to print off parts to change my voron0 to a F-Zero. I've noticed that I get some z banding that starts around holes or other features. I looked around my printer, made sure my lead screws are clean. They look all good but I noticed 2 of my else screw stabilizers (black parts at the top with the bearing) are broken. So I switched my printer over to print petg and started printing. I never got any z banding while printing these. Could it be the part I'm trying to print? My printer is an unsealed enclosure. It's enough to keep the are warm and keep drafts out but it isn't heated. It gets to around 25c at its hottest, running abs for 12 hours. Any help would be appreciated. I can live with the minor asthetic issues but I would like to improve. Once I've printed these parts, my vcore won't print abs again. Abs print speed is slow. I've got it set to 100mm/s on external perimeters. Maximum print speed (infill) is around 180mm/s. Width is the nozzle side, 0.4 everywhere. The part printed had 6 walls (the github page recommends this). I run 8k acceleration while printing abs with a max velocity of 300. Thanks. Marc.
1 Reply
3DBoomer
3DBoomer13mo ago
I think you parts are slightly warped (visible on black print. The z bending matches the moment your part has warped... ABS is a pain