P1S print issue with the sides with comparison picture

Bambu Lab P1 Series
1

Hello everyone new P1S user here. I was just wondering what the failed edges are called and what might have caused it?

I have circled the issue in red. These are two different model, but are very similar. I printed using the basic bambu pla with sunlu PLA+ filament. There were no supports for both models. So far I printed a couple of things, but did not run into this issue yet and want to prevent it from happening in the future.

Is it related to the auxiliary fans or fans? I did a search in this forum to see and I am not too certain. Also are the fans necessary in the closed P1S necessary for printing PLA+ I was reading comments and the advice was to lower fan speeds for all the fans. Thank you.

20231116_065205
20231116_0652051920×2560 502 KB

2

Not sure what it is called but going slower and improving resolution (Slicer → Quality → Precision → Resolution) should help on a calibrated printer.

3

Thank you. I will look into that. I will also try and recalibrate the flow dynamics and flow rate. Forgot to mention that I changed filament rolls as I ran out of the previous one.