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?

  • Cecilsteadman420English
    1·
    1 month ago

    Salt annealing isn’t needed, but from my experience my salt annealed ppa vs regular annealed ppa is a huge different. I cut a notch in my printer rail and smacked it with a hammer (I swear on my life) at least 20 times and the part didn’t even bend a little. I had to sit there pushing with a soldering iron for more than 5 minutes to break off a picatinny rail

    • KopsisEnglish
      1·
      1 month ago

      Annealing results in more uniform crystalization which generally reduces impact strength. If your salt annealed parts showed higher impact strength, that’s an indication that the annealing was actually unsuccessful.