I’m trying to diagnose what tuning I need to get a smooth top layer on a solid print.

The picture you see is a 50mmx50mmx1mm square (cube([50x50x1]); in openscad) printed with a .4 nozzle. (5 layers)

For tuning on the problem, I have looked into:

  • z_offset – tried all kinds of values and if I reduce it anymore, it doesn’t squish into the bed and the center part is exactly 1mm – so unlikely to be that.
  • bed level – bltouch is working well
  • extrusion (esteps or rotational_distance) - played with this a great deal and any less and i start to have under-extrusion in the center area.
  • different filament – same with PLA, PETG and ABS
  • Different slicer – same with PrusaSlicer or Cura
  • Different speeds – one on the left was printed at 20mm/s – the right was printed at 150mm/s

I also cant find any guides out there that show this issue. Anybody with some suggestions or threads I can pull?

  • tenzen@lemmy.caOPEnglish
    1·
    1 year ago

    in those two cases, they are PETG and bed temp was 80. The curved edges were caused by me removing the print from the hot bed… not lifting off during the print.