I’ve been using my Bambulab P1P 3D printer with the standard 0.4mm nozzle for quite some time now. Lately, I’ve been encountering an issue during printing where cushion-like formations appear on the top layer, as you can see in the attached picture. (pillow)
I’ve set my flow rate ratio to 0.9, which I adjusted through calibration. Additionally, I’ve configured the K value to 0.020. I’ve also installed the anti-vibration feets and an AMS.
Filament: Bambulab PLA Matte
Slicer: Bambu Studio
Strangely, I’ve been getting good prints with these settings until now. I’m perplexed as to what might have caused this sudden change. Could the introduction of the anti-vibration feet or the AMS be related to this issue?
If anyone has experienced something similar or has suggestions on how to troubleshoot and resolve this problem, I would greatly appreciate your insights.
Thank you for your time and assistance!
Are you using grid infill just under that top surface? I ask because this is exactly what my printer has started to do when printing just one or two top layers over grid. And solid layers look no better - after a couple of months of flawless performance, all of a sudden I get this horrible top surface. Which I think is down to underextrusion. My bottom surface is also looking a tiny bit underextruded too I have cleaned everything to within an inch of its life, swapped filaments, used gcode that has worked flawlessly in the past - but the problem is still there. I’m currently running a print at 50% speed to see if that is less bad.
It all started to go wrong when I updated to the 0.6 firmware; it just fails to get any better when I roll that back to earlier FW
Are you using grid infill just under that top surface?
Yes, im using the default infill settings.
I also tried to install the older firmware (1.03.) to possibly solve the problem - unfortunately without success.
I could not solve the problem, but it improved when I changed the floren ratio of the filing (Bambulab PLA).
from 0.9(Value of the bambulab calibration) to 1.01. with these settings:
I also tried to reset everything (printer, cutter), unfortunately I could not solve the problem.
Maybe the nozzle is worn out!?
I will try the days to order a new nozzle and install, maybe that also solves the problem.
For me, the problems only occur when the surface is relatively large and is driven in the same direction for a very long time.
I have tried the same test with smaller plates. there I had no problems.
Were you able to solve your problem? Did you try what I wrote? I hope it works for you as well, at least as an improvement.
Just wondering after adding both did you happen to do the vibration calibration?
Also I got to thinking, I will try my k value again let’s say if it is 5 I will set the first.
Then I may adjust it to say 4 or 6 if there are issues. Just Incase 5 wasn’t quite it. It might truly be like 5.5 or even 4.5
So I kind change the number around that first value until it works.