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([50,50,1]); 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?
I agree, not just the perimeter but also when it’s going back and forth to fill in the centre area. I’m not sure how to address it – maybe the pressure advance settings LazaroFilm suggested. I’ve also tried printing at a series of different temperatures…
That’s what I meant, have you tried just decreasing the printing temp by 10 degrees and then printing another square and comparing the result?