Since a couple weeks i started having this problem with the first layer.
On random areas seems scratched.
I did a full calibration, changed nozzle, checked the 7 screws, tested different filaments.
What else am i supposed to check? Assistance was useless.
It looks like under extrusion. Have you tried a cold pull to clear any obstructions from the nozzle?
I changed nozzle 
with a brand new one, no difference
Have you performed maintenance in the last two weeks? What things have been changed, new filament, nozzle, build plates, etc? When you say “full calibration” is that a printer calibration or filament calibration? Do you have the correct build plates type selected when slicing?
There is a setting for increasing the flow ratio for the first layer on the ‘Quality’ tab in Studio. It defaults to 1.0, you could change it to 1.05 and see if that helps.
Do you use a 3rd party 3d effect plate ? or am i looking at the wrong parts
I tried to change that, no difference. It’s only on some sposts (that change randomly)
Yes, but even on the carbon effect bambulab plate you can see it. Even on the cold plate. Just on the pei you can’t see it.
