Problems with print bed adhesion PA-CF (Nylon carbon fibre)

Bambu Lab P1 Series
1

Hi,

I have a problem with the print bed adhesion of PA-CF (nylon carbon fibre filament). There are no adhesion problems at all from PLA to PETG to ABS, ASA and TPU. My printer has an enclosure.

  • Filament: eSUN ePA-CF (Top Nylon Carbon Fiber Filament-eSUN 3D Printer Filament).
    Freshly unpacked, dried for 12 hours at 70°C.
  • Printing plate Bambu Dual-Sided Textured PEI Plate at 100°C and 3Dlac spray adhesive.
  • Nozzle: hardened 0.4
  • Print settings are the generic ones of the slicer for PA-CF supplemented by a brim of 1cm on the outside.

Do you have any other ideas what to do?

edit: after a couple of trys: on print finished but lifted again :confused:
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2

Have you tried using the glue stick or other adhesive on the bed?

3

I don’t have any other options at hand at the moment, so I’ve been browsing around the forum a bit. In this post here, there were a few interesting settings that helped me: Deviating from the standard PA-CF profile, I changed the following settings - so the adhesion is perfect even without the brim - I am very satisfied with the result.

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4

good luck, but PA-CF dose not like to stick and glue is always recommended if you want any successful prints with it

1 Like
5

Try it with the Engineering- or High-Temp-Plate and glue.

1 Like
6

It is good to know that the problem is solved.
A note: for eSun filaments, you have specific print çprofiles for Bambu Labs printers.
And it seems that the recommended settings are near to the ones you had success with, e.g.:

  • hot_plate_temp": “60”
  • “nozzle_temperature”: “280”
  • “filament_max_volumetric_speed”: “10”

Maybe the other differences can even lead to better prints. It is a question of trying.

2 Likes
7

The +10K for bed and nozzle do not make a big difference. The adhesion is perfect with 3DLAC and the textured PEI plate.

I’m still a little bothered by these small dots (circled in red). Is there anything I could do about them?

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8

Hey!, I was wondering if you ever had a solution with the small spots on the top layer finish? I have the same issue :frowning:

9

Not sure we can expect perfection from a machine that spews molten plastic out of a nozzle with no active control of the opening. So, there may be an imperfection or two, here and there. But if I were trying to perfect it, I’d make sure the the filament I’m using was flow rate tuned for the best possible top surface (run the tests in Bambu Slicer). Additionally, you might be able to further improve it with the slicer setting “Ironing”.