Rough Top Layers
stock 3.1 400, Oribiter V2
Hatchbox Black ABS, 100 bed, 250 hotend
0.2 layer height, 5 top layers (pic on printer), 4 looks fairly identical (pic on desk).
Same result in OrcaSlicer and SuperSlicer
Presumably this is extrusion related. Allegedly my flow is good when printing solid pieces, like the calibration pieces, but when printing over infill, you can clearly see the infill pattern through the top layers.



7 Replies
You need more top layers
How much top layers do you have ? 4 ?
The pictures were taken with 5 (printer) top layers, and 4 (desk)
Try 6 or 7
Printing more layers is merely covering up the problem, it's not curing the issue.
Solution:
This is print error is called pillowing.
Because this was being printed in ABS, this has a very simple solution - lower the fan speed!
The glare in the picture is making this look far worse than it is, other than a major divot from bending the print while removing it from the bed just as it finished, the top surface is devoid of pillowing from the infill pattern.


Will run a large print to confirm the above findings.