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PPA-CF vs PA6-CF?
Does anyone have experience printing PPA-CF and PA6-CF? I had read that "PPA-CF is 48% stronger" than PA6 if you get good layer adhesion, but I'm seeing conflicting info regarding impact resistance. Anyone have input who's printed and used both?
What about PAHT-CF? Seems underrated. Tensile properties look good.
There's no such thing :) PAHT is a marketing department invention, not an actual polymer. It's usually either PA12 or PPA, but you need to check with the manufacturer to find out what you're really getting.
I'm not an expert but comparing the strength tests and water absorption it seems like a potentially better option than PA6/12. I think I'll test it with a print and use PET-CF for the non-heat sensitive parts.
I am assuming you are talking about bambu lab PAHT which as mentioned is just a marketing team (although, PPA is not a specific chemical name either iirc)
Bambu lab PAHT is WAY overpriced for what you are getting, especially relative to sirayatechs offerings.
QIDI seems to be better in terms of pricing.
qidi/fusrock/phaetus are all the same so if you want their PET/PPA just buy whatever is cheaper. I still haven't found anything that beats the price/perf of sirayatech though.
PPA is the abreviation for polyphthalamide - not a marketing name. Though there are variations (just like polyamide), the 6 carbon (same basic structure as PA6) is the only one I've seen used in consumer filament.
I'm not saying it is a marketing name, just that Ppa by itself doesn't give a complete picture.
Either way, I'm trying to talk edgeof3d and Dr. Gaspar into doing a Ppa shootout
That's true for every filament. None of the PA6 is just PA6. Same for PLA. PETG can vary wildly in how much glycol gets replaced. The list goes on. But in all those cases, the name accurately identifies the base chemistry. That is in stark contrast to the name PAHT which doesn't even give you that much.