Poor quality

Bambu Lab P1 Series Troubleshooting
1

Hi there,

I have a new P1S with AMS set up since 5 day ago. It’s my first BambuLab, but I have a printer-experience with a other printers.

I am not satisfied with the quality of the P1S printer. The individual layers are very loosely stacked. See the attached pictures. I use the original bambu lab basic filament. I am using the latest firmware and have already done a factory reset. But nothing has changed in terms of quality.

Can anyone help me with what I can do?

Thanks in advance

Stephan

IMG_0409
IMG_04091920×1440 121 KB

2

What speed and temp? Is the filament dry? Clogged nozzle maybe?

3

The filament is new, i remove it from the box 4 days ago. The temperature is 220°C. and the speed 100%.

4

Did you use the standard print settings? Or did you change something?

5

Ich use the standard print settings.

6

I have change the hotend. The same problem.
In the beginning, it looks good but after a couple of time it change to very poor.

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IMG_04101920×1440 279 KB

8

I only use the bambulab PLA Basic with the appropriate profile. The problem also exists without AMS, same result. I have already checked the filament feed several times and it is OK.
I have printed a simple cube as suggested. The filament is new and has just come out of the packaging.

Unfortunately no improvement, same result. Does anyone have any ideas what can be done?
Many thanks

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IMG_04272016×1512 350 KB

9

Have you tried drying the filament? From my perspective ( with limited knowledge) it looks like wet filament. Maybe put the spool in the oven at 60 C for a couple of hours and run the prints again.

10

I always have nice prints with PLA, but suddenly I had the same problem,
The room were I print was much colder then normal, so I changed the cooling fan
from 70% to 30% because of the colder air it’s blowing, now I have perfect print again.

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11

even if using default settings, be sure to use the calibrate feature of the machine now and again; changes in the environment (like heating coming on in winter. etc) can impact printing quality.

12

I have try to print without cooling fan, the result is nearly the same.

13

So sorry that you’re having a bad day.

Dumb question first, but worth checking: Are you sure it’s really PLA? You’d easily get that result with ASA and ABS on a open printer or with the wrong profiles.

What the photos show is under-extrusion.

Possible causes:

  • too high speed, like using Ludicrous mode, or manually messing with the speeds and volumetric flow.
  • wrong nozzle selected.
  • too low filament temp.
  • cloggged nozzle or feed.
  • inconsitent filament diameter.

Dos and Don’ts:

  • dont’ use values that you had experience with for your other printer.
  • don’t use gcode files you had for your other printer.
  • don’t add your old custom gcode to Bambu Studio.
  • do try the “Silent” speed modifier and observe while it’s printing: it should go at snail’s pace.
  • do try to divide by half or more all speed values before slicing.
  • do try to print with the top cover on, and the door closed even though it’s PLA.

You could also try to export the model to a gcode file and inspect the content to see if the feed speed dramatically increases at some point. This could indicate a bug in the slicer. (very unlikely but not impossible)

At this point you should publish your complete and exact settings, including for the filament, otherwise we’ll just assume you changed something and nobody will be able to help.

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