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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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[–] 1 point 7 months ago (1 child)

For a long time, many people（such as reddit） have believed that PETG should absolutely never be used in 3D printed firearms. Is this reasonable and scientific? Furthermore, with recent improvements in PETG materials and the advancement of 3D printers, has PETG become a viable option worth trying?

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  • [–] 1 point 7 months ago

    Even in the past for petg, it depends on the caliber and design and I'd say the same with abs/asa, pet and and some others. It's still a better idea to use a better filament and have a larger margin of safety with more strength than you need but they can survive. I have seen several that have used petg over the years with 22 without issue. Larger calibers was more mixed. I personally still won't use it but I can afford to use nylons on anything I want to keep for a long time.

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