I am having a massive issue with a print where the slight overhang exterior wall is just horrible looking. Here is what I have tried.
I printed this file in March with success, now it looks horrible. Here is what I have done.
-Dried filament with dryer and tried two colors (Esun PLA+)
Updated to newest versions on bambu as well as downgraded to march, tried Orcaslicer as well
Follower everthing listed here (PSA: START HERE! Calibration made SIMPLE & please SHARE User Tips!)
Tried cooling my office down to 60° and printing with door and lid open as well as all fans at 100%
tried a few different calibrations
checked for clogs
slowed walls down to 50mms (helped a tiny bit)
overhangs are all at 10% speed
Removed and replaced thermal paste
checked all fans
inner- outer walls
slowed acceleration to 1000 for exterior walls
Done every piece of maintenance recommended in wiki
There is probably more, I have been trying for two weeks to fix this and I am now VERY behind on multiple deadlines.
These photo are from last week, it gets way worse at times and never really better than this.
Hi Joe!
I’m the author of the ‘PSA:START HERE!..’ post. It’s fairly dated although mostly still valid (I need to update it, but no time, sadly)
I’m not on the boards much right now (life and all that …LOL) but I saw your post and one thought popped into my head.
Have you tried changing the wall printing order?
I suggest using Orca Slicer for this.
Try changing - Under Quality > Walls and Surfaces > Wall Printing Order. Choose Inner/Outer/Inner.
It can have a marked difference in surface finish and may solve this problem.
Check out this vid on YT on this subject, it’s an eye opener:
I doubt I’ll get a chance to follow-up, but there’s a lot of helpful people on here! Good luck!
Cheers!
@ThanksForAsking thank you for reaching out, your post was very helpful in making sure everything was done correctly.
The Outer-inner- outer dis help a little for a few prints but the problem is back and just as bad.
Driveby reply (LOL) - YW.
Sorry to hear it’s back 
Only other thing that comes to mind is slow it down a bit and look on YT for videos on improving surface quality.
Good Luck!
Hi, I’m experiencing the same issue on my P1S. It’s just started happening across multiple different models that all still print fine on my X1C. Did you get to the bottom of this?
I’m getting this too. Around corners on overhang. Slowing it right down on overhangs, exterior walls, and cranking up the fan has partially fixed it. But It’s still there.