Lines began to appear on the outer walls

Bambu Lab P1 Series Troubleshooting
1

Hello everybody. I’m a beginner, the first time I write on the forum. I have a 1p1 for 3-4 months, I haven’t used it for 1-2 weeks and lines started to appear on the outer walls at different heights as you can see in the pictures. If anyone has encountered this problem before or guess what it might be, please give me some advice. Thank you

Basic bambu Pla
Temp 210-220

image_6487327 (1)
image_6487327 (1)1920×1441 170 KB

image_6487327
image_64873272100×1576 476 KB

2

First of all I’m guessing you have a p1p. You look like you’re also having layer shifts also. Have you updated your firmware lately. There has been a couple lately. Other forum post talked about upgrading fixed some problems.

3

Slice that same object and check the other options to see if it gives you a clue. Layer times, speed etc.