Comment on Want a 3D printer in New York? Get ready for fingerprinting and a 15 day wait
gullible@kbin.social 8 months ago
Don’t 3d printed guns crack after like 2 shots? Next they’re going to require ID to buy pipe and nails in order to guard everyone from modern improvised muskets.
Even in one shot the 3d printed gun will explode. The cartridge is just a container for the gun powder, not the explosion. Real guns have a chamber that contains this explosive pressure.
3d printed guns are nowhere near strong enough to contain this pressure and when the gun fires the bullet is flung harmlessly in some random direction. Since there is almost no energy imparted into the bullet it doesn’t have any power or lethality, heck the shrapnel from the casing is literally more deadly for the shooter than any bullet towards the shootee.
Heck a 3d printed gun can even fire a bullet at all. Plastic is not rigid enough to detonate the primer and set the round off. You can literally fry bullets in a cheap metal pot and when they explode they won’t even go through the pot.
The only way you could make a 3d printed gun work is by incorporating tons of other metal parts, at which point it isn’t a “3d printed gun”. Search up pipe shotguns. They can be made with a handful parts from home Depot and only require 1 or 2 tools at home (only 1 if you get them cut at home Depot). Far more effective and actually deadly, even used by guerilla forces against imperial Japan in the Philippines.
embedded spark plug fragments, the ceramic, at least that’s what I overheard while minding my own law abiding business having breakfast at Shoney’s.
The real difficult part, or so I overheard, is the spring needed to generate the force needed to set off the primer, I did not hear of the other obviously dastardly people who were not related to me in any way by blood or association, apart from sharing the same species you see, had come up with a metal detector evading solution.
If it’s only 3d printed plastic, yes. Most “3d printed guns” are like Glocks. Metal for the important bits, plastic for everything else.
Hypothetically you could 3d sinter print a chamber but I doubt it would survive more than 3 shots, and would more likely just become high velocity shrapnel through your hand.
What people are doing with “3D printed” guns is printing the receiver or frame components that are otherwise serial numbered and federally regulated, and populating those with metal barrels, slides, upper receivers, trigger assemblies, pins, springs, etc., as appropriate from the genuine item. These can be quite functional and durable, because the majority of the gun is, in fact, still made from “real” gun parts.
Clever individuals have gotten quite far in managing to print most of the required components, but several critical parts simply can’t be made with consumer level printing technology. At present it is impossible to fully print a gun out of plastic and actually have it work.
The way federal law works, the ATF has identified and decided what constitutes the minimum identifiable major “gun part” of a given model of firearm, which is the part that must bear the serial number and is the component that cannot be sold without a background check through an FFL. For the Armalite platform, for instance, it is the lower receiver which is a component that can be 3D printed. The upper receiver is not a regulated part. For many polymer framed pistols like Glocks, the grip housing and frame is the FFL component. These can typically be 3D printed as well. But some guns, like the PTR/HK 91 and Sig P250 it’s not the frame, it’s the trigger assembly that’s the FFL item. You can’t effectively 3D print one of those – although you could probably manufacture one with a milling machine pretty easily.
I was watching some videos, they look pretty sturdy.
Apparently rebels in Myanmar are even using them.
Don’t they still use metal parts? Or was it 100% 3D printed?
The ones used in Myanmar are variants of the FGC-9 which indeed contain metal parts.
Currently the most common method of creating 3D printed guns are buying parts kit and printing the reciver (housing) for it. But the FGC-9 is specifically designed to be able to be made without any controlled parts, including the barrel. Any metal parts used can be bought in a hardware store.
FuglyDuck@lemmy.world 8 months ago
depends on the design, as well as the capability of the printer.
DMLS is capable of producing basically anything you can think of in metal. FDM or resin, or whatever… you’re printing the frame.
the DEFCAD design, specifically, you’re printing the AR lower receiver- which for some stupid reasons is designated as the “firearm” as far as laws and regulations go. So you can print the lower and buy the rest in cash as parts.that said, the only real function the lower serves in an AR is holding the magazine in place, so it’s not really subjected to anything that’s going to break it.
Incidentally, $40 at a big box store and a lot of TLC with a dremmel can produce a passable SMG. in fact… many of the ww2 era machine guns were designed to be made in factories that used to turn out plumbing parts. (because this reduced the amount of time and materials spent on retooling the production lines.)
dual_sport_dork@lemmy.world 8 months ago
Anyone interested should look up the Luty submachine gun.