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PET-GF Master-At-Arms Fosscad Discord Moderator Currently infiltrating the additive manufacturing space under 3 NDA. I'll never share my secrets....Unless you ask nicely.

  • I have a few PPA variants in hand for upcoming testing, but the biggest takeaway everyone needs to have with PPA is that if you aren't able to sustain 320c nozzle temperature, skip the material altogether. I suspect when printed properly with 320c nozzle and elevated chamber temps, PPA will end up the superior option, but I am a ways off from having any data to back that claim.

  • Pet-cf is a poor choice for small pistol frames, however this isn't really an issue with larger projects such as lowers, pdw frames, etc.

    Pet-gf is even better in this regard.

    However I prefer ppa-gf over both

  • How are the parts failing as a function of rigidity?

  • I think people are going to realize that there is almost no situation in guncad where pa6 makes sense over Ppa and the only thing holding Ppa back is Bambu Labs shitty business practices.

    If you can't hit 320c, ppa-cf/gf is the way to go

  • Venturing out into engineering filaments should happen after you learn how to tune your printer and filament profile. It will stop you from needing to ask other people how best to print filament on your machine. Ellis' tuning guide has the most in-depth tuning rhetoric that exists and you can use it as a framework on your end

  • as Kopsis pointed out, the only real comparison that makes sense is the TDS.

  • You need to remove material from the front leg of the trigger timing bar until you get clean bolt cycling. Ensure everything is lubricated. Then, once the bolt cycles, perform a function test starting with the safety. Once you establish that the safety is functional, attempt to function test in SEMI. It will likely reset the trigger. Slowly remove material from the same front leg until it no longer resets in SEMI. Then complete a full function check of all positions.

  • this isnt how you time/tune a kabuto.

    Timing/tuning should be done on the trigger timing bar (formerly called the "activator"). You remove material from the front leg of the timing bar, until it cycles in SEMI and no longer resets.

  • 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.

  • debt is bad guns are good. Don't carry debt so you can buy guns!!!

  • If you think it's diminishing returns to go from PM pet-cf to bambu lab pet-cf, why would you choose it over Sirayatech, which is more performant than PMs offering AND much cheaper? You can get PET-CF from ST for 37-34$/kg vs 25$/.5KG (50$/kg).

    https://www.youtube.com/watch?v=6qOrv_r-rKU

    PM comes in last in every test except for Impact Resistance (which is a fail) and price (because they used the 3kg price.

    The PM offering was designed with printability over performance and comes in last place in creep, 3-point bending resistance, tensile, layer adhesion (enclosed)

    Where is ST Pet-cf is the cheapest tested and basically always comes in either 2nd or tied for 2nd.

  • FRT are not "NFA compliant" so that section doesnt apply at all. However, this law is specifically why I pushed the various kabuto/turd devs to shift the naming scheme from "activator" to "trigger timing bar".

  • If i remember correctly the whole point of the drink can mods was an "in plan sight" suppressor.

  • I also approve this message. Confuzled is a piece of shit

  • Easy 22 build is the EZ22

  • General Discussion @forum.guncadindex.com
    Confuzled

    Want awesome filament? Want to help Guncadindex?

  • 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

  • Just wait until sirayatech drops ppa-gf later this month for 45$

  • What is "normal" pa6-cf vs the green one and why isn't this post showing a chart between the two filaments in question? Pa6-cf and pa6-gf.

    Based on some very lengthy discussions, both in person and via discord with polymakers material science rep and their director of product development, unless you are playing to dye the filament, there is no reason to use pa6-gf over pa6-cf..if cost is an issue, there are other filaments better suited.

  • For the most part, if you dont need your hand held, I would steer clear from polymakers PA/PET offerings. They are geared towards printability (think open-air printers) instead of performance.

    Sirayatech on the other hand, has amazing performance for very low price. I have tested a fair bit of PPA-CF (at 62$/kg and 45$/kg if you print with .5mm or larger nozzle, they have a special batch) and have been very happy. However, latest this month they are releasing PPA-gf at 45$/kg and I will have some in for testing soon.