PPA-CF bed adhesion magic (ASA Raft)

Bambu Lab H2 Series
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To whomever suggested using an ABS (or in my case an ASA) raft to improve bed adhesion – I am forever greatful.

The ASA kinda sticks to the PEI plate a bit, and the PPA-CF kinda sticks to the ASA a bit.

I’m about 4 hours into a 10 hour functional print, and no peeling or warping to be seen.
I had 3 print failures before I tried the raft suggestion.

Of course there’s always the standard list of prereqs:

  • dry the filament
  • clean the build plate
  • 6.5mm^3/s max volumetric speed
  • 100c build plate
  • 60c heated chamber
  • print at 290c
  • a spritz of aquanet extra super hold on a cold plate for at little extra

This stuff is kinda a pain to get set up, but I’m getting great parts. And that Siraya Tech Fibreheart PPA-CF Core Filament? It’s pricey but it’s very nice. Definitely a smoother finish than their non core version.

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I never had any adhesion issue with PPA-CF. You just need some glue and then you’re fine.

You can go 110C build plate, and the chamber temp should go for 65C.

Print should be >300C. I print at 320C-340C.

ASA is a nice support material that’s for sure

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On my Darkmoon CFX, I don’t need any glue for PPA to adhere properly — but as you know, I usually apply some anyway, just to be safe.

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The smooth PEI also works fine for me with Siraya Tech PPA-CF.
No glue required.

The textured PEI already started peeling off in the first couple of layers.

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Smooth PEI plates always have better adhesion than textured. Textured was designed for better release of model (TPU/PETG).

Glacier/Cryonix type plates are probably the best for this use as they were made specifically for nylons. I print PPA on mine with no adhesives.

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I also print цшер PPA on textured plate with absolutely no issues whatsoever, i never used glue