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How do we feel about PETG-GF? (forum.guncadindex.com)
submitted 7 months ago by to c/general@forum.guncadindex.com
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Someone recently turned me on to a new weird PETG-GF that is supposed to be very impact resistant and very affordable. I'm always interested in new materials, especially those that are cheap and easy to print in.

I use this "UFA compliant compact striker fired artillery boi" platform for material tests. If it's built well in PLA+, they will take a solid diet of high velocity 22lr with a standard printed breech.

This has been the best one of these I have built so far. I have ran shorts, standard velocity, high velocity, stingers, and interceptors. Extracts flawlessly. No signs of wear at all.

I'll take it out and run the hell out of it within the next couple of weeks.

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[–] 4 points 7 months ago (1 child)

If you're planning on putting a new filament through its paces, make it a lower for a direct blowback 9mm. AR-9, FGC, M11, whatever, but that'll be one of the more violent things you can do with it. That and an AR lower specifically for buffer tube interactions.

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  • [–] [S] 2 points 7 months ago

    I have done a couple other parts, such as hd22 barrel nuts, Glock mags, 10/22 mags, etc. I did some destructive testing with Glock mags and they held up really well.

    I don't do much with parts kits builds, and these little suckers are easy and cheap enough for me to build just as a test. I know what to expect out of them with other materials such as abs, PLA, and pla+. The breech, sear, and hammer are typical failure points for this particular build and get different types of stress.

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