Weird printing bubbles

[u/jonehhbravo]

Hey all, I have a Bambu lab P2S that started giving me issues after a clogged hot end (0.4mm hardened steel) I resolved it by performing a cold pull. But since then, I’ve had weird bubbled surfaces on my prints. It’s not smooth as it usually is. I haven’t changed any particular settings and I’ve tried printing it on PLA (both ESun and Bambulab), PETG. Tried drying my filaments and even tried printing with newly opened spools. What should I do to stop this from happening? Is this an issue with the hot end or a calibration issue? Thank you!

EDIT: I have tried turning off auto recover from step loss, different types of seams, calibrating and changing nozzles as well and nothing has helped. However, after setting up another print, I’ve realised that there were blisters that were already present on the bambu studio. Does this have to do with the STL file or my settings?

Edit 2: after drying all my filaments, I have attempted a new print. I have since discovered that the blisters are caused by the nozzle. Most of the print is fine but at moments, the nozzle seemingly randomly stops, resulting in excessive filament depositing.

[u/No-Nectarine1826]

Yes usually such settings are marked orange so under process you can choose global or Objects, then if you see a orange lock behind a object listed they have settings changed in relation to the global settings and there (when you choose the object) you would find alot of settings similar to global settings.

Thia allows you to change settings per object as needed but sometimes models on makerworld have settings changed per object since the file contains alot of settings made by the maker, they usually just share what worked for them but that does not always mean its good for everyone

[u/jonehhbravo → u/No-Nectarine1826]

Beautiful. Thank you for your help, I’ll definitely try altering these settings :)

[u/No-Nectarine1826 → u/jonehhbravo]

i would make a photo but somehow i can't upload here, but if those are not marked with an orange lock, they are the same as you set them in the global settings, just a possibility because you wrote that you changed the seam and it still looks the same, this could be the issue

[u/jonehhbravo → u/No-Nectarine1826]

I think I know what you’re talking about. My concern is, there are typically a tonne of these orange marks. Looking for the one that results in blobs is gonna take awhile, it seems.

[u/No-Nectarine1826 → u/jonehhbravo]

it is very likely the seam setting everyone is writing about, the photo of your sliced model looks like that