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?

  • @IMALlamaEnglish
    22•1 year ago

    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.

    • @marcosEnglish
      8•1 year ago

      inconsistent extrusion due to variation in hot end temp and/or filament width

      Also, a moist filament.