Actually, I think you need some sort of tightly fitting metal tube as well, othe... | Hacker News

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		bd_at_rivenhill on May 3, 2013 \| parent \| context \| favorite \| on: The world’s first entirely 3D-printed gun has been... Actually, I think you need some sort of tightly fitting metal tube as well, otherwise the cartridge case will just split.

stcredzero on May 3, 2013 [–]

There have been many prison guns made from a piece of wood with a slot cut in it. That's enough to keep the case from splitting enough of the time on a low powered round to be useful.

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