Just about all of my prints have these lines at around the same heights, and I can’t figure out why. I tried changing the nozzle, changing the layer height from 0.15 to 0.12, and changing the speed from 60mm to 40mm. All of these seemed to have helped a bit, yet they remain. I was thinking maybe as the prints get to a certain height, the shaking of the bed (Prusa MK2) caused the layers to be slightly offset perhaps. Anyone have any other ideas?
Horizontal banding can be caused by a few things
- the slicer making the nozzle move differently between layers because there are different features in different layers. You can usually see this in the sliced gcode preview with something like nozzle speed
- inconsistent extrusion due to variation in hot end temp and/or filament width
- lead screw wobble. This will show up as a repeatable pattern along the z axis
- binding in the z-axis
- something loose, most likely on your gantry
If you print two different models and it happens at the same z height you can basically guarantee it’s a mechanical issue. If it’s more random you’ll need to troubleshoot further.
inconsistent extrusion due to variation in hot end temp and/or filament width
Also, a moist filament.
Check the Y and X axis for dirt or imperfection, thight all the screws and be sure the printer sits on a stable base.
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It could be skipped steps, a warped Z axis, lash in the axis. It doesn’t look like ringing to me.
If your steppers run too hot or against too much resistance that’d be the first thing I’d check. As well as give the axes a bit of a yank and ensure it’s all to the German spec.
Along with ekZepp’s, check the z carriage as well- both the rail carriages for play and the lead screw for straightness.
I’ve seen similar happening on my bro’s ender, and he had to install a brace going up from the front of the printer to the top of the upright, but I’m not sure how rigid a mk2 is.
It does seem like one of the screws it touching the side of the stabilizer at the top, and the other is perfectly straight and isn’t, so I might need to look into that. Thanks for pointing me in the right direction.
I was having this problem, combined with a confusing bed adhesion issue. My gantry needed to be releveled.
Thank you, checking this now. I made a change I found on a video and made a new post here.
How did you relevel your gantry? From what I see, you can loosen the two things I pointed to in my new post.
I have a different printer; it was a pretty involved process that required partial disassembly. I imagine this is very printer specific.
Gotcha, thank you!
