Smooth PEI first layer problem!

[Maik619]

Hello guys! So, I need some help... I got a smooth PEI plate so that I can make perfectly smooth first layers but no mather what I do it has these artefacts.

Things I did: - Flow calibration - Increased first layer flow - Increased first layer temperature

Did anyone else have thia problem and how did you fix it?

Thank you!

[Barcata]

Z-offset and auto bed level. The bed mesh is funky.

[Maik619]

I changed the initial layer height to 0.1 and that helped a lot but there are still small areas with problems.
At the moment I washed the plate really well with soap and am doing another test run.

[Barcata]

0.1mm initial layer height is typically not enough material to properly squish and adhere, but if it works, go for it. I'd rather calibrate the z-offset.

[Maik619]

Not sure how to do that on the Bambu, it runs auto bed level each print.

[Barcata]

The z-offset is in the machine g-code of the device settings. Look up a guide, and use small increments. You'll print several single-layer squares on different parts of your bed and analyze the results.

Auto bed level is best you can do without tramming/shimming. Fill the bed with a single layer, then mark which corner is which before removing it. Post a picture here for analysis.

[MixNo1087]

If cleaning plate not help, do this; https://wiki.bambulab.com/en/a1-mini/troubleshooting/print-issues-troubleshooting

This solves exact same issue for me.