3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
Rules
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No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
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Be respectful, especially when disagreeing. Everyone should feel welcome here.
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No porn (NSFW prints are acceptable but must be marked NSFW)
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No Ads / Spamming / Guerrilla Marketing
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Do not create links to reddit
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If you see an issue please flag it
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No guns
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No injury gore posts
If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is 
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Reminds me of a time when I went to a maker space open house, and they were showing all kinds of cool stuff, including fairly advanced 3D printers for time. They mentioned there was programming to halt prints of things like gun parts, so it would be very hard to make guns using them. I commented, "Besides, you can make better ones in the metal shop in the other room." He replied, "Yeah! No!"
People have been making versions of zip guns forever.
Four Winds Shotgun is a good thing to know about. I don't think you even need a machine shop.
Is that the sliding pipe gun? I think all you need is materials, a hack saw, and a drill. But with a machine shop, the materials list is just steel and some springs, and you can have a gun as good as any we had prior to the last century.
Even rifling can be cut with nothing more than a hardened piece of tool steel, a green sapling and a bit of time and patience to make what's called 'Scratch rifling'. Even a wooden rifling machine isn't hard to make if you want to boost production a bit.
And yes, the metal working shop I own is perfectly capable of making every piece of any firearm you might want. I have even made a black powder 2" Coehorn mortar to launch baby food jars filled with concrete 100s of yards. I know guys who have made full sized and functioning Gatling guns down to the horse-drawn trail it was mounted to. An expensive and time-consuming endeavor.
But it makes the general populace feel good and gives politicians more power.