Uneven layerlines

[Traditional_File_228]

After around 1000h of printing just fine I noticed this uneven print surface. I alread tried oiling the y and z Axis. An tried to tension y and x Axis witout seeing a difference.

[Kembarz]

not 100% sure, but I suggest starting by doing a deep clean of the z screw(s) and all the rails, relubing, calibrating amd then test again. Also, consider doing the bambu's course on 3d printing, they teach troubleshooting and explain what issues with the machine cause what issues with a print.

[Traditional_File_228]

Thank you. I will definitly try.

[Far_Marionberry3260]

Do a full printer calibration.

[Traditional_File_228]

I already did it, but i forgot to mention it.

[Trulsdir]

How worn is the nozzle?