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this post was submitted on 15 May 2025
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Isn't 3D printing a gun a very stupid thing to do? Like as soon as you downloaded any sort of blueprint (or whatever those machines use) you'd be on some sort of list.
How would you end up on that list? A lot of 3d printers aren't internet connected, you can download the files with Tor, and afaik OS's don't scan for gun files (and even if Windows did, there's linux).
You can't stop the signal.
How would an OS scan for gun files? They're literally just cam or 3d print instructions.
It's not like clippy is going to pop up on my legal copy of solidworks to tell me off for making a tube
https://www.voxelmatters.com/3dprinteros-develops-algorithm-to-identify-3d-printed-gun-parts/
3d-printer companies have been developing detection algorithms for gun files. Some (very, very few) already deploy them to their printers, and presumably they could be applied on an OS scale.
Or your OS could check files against known gun file hashes.
If they just check hashes is it possible to just slightly modify the gun, like add a mm to the trigger or something, to change the hash? I would imagine you'd need a more sophisticated detection algorithm to check if what you're printing is a gun. And I imagine people who want to 3D print a gun could buy a model of 3D printer that doesn't have those restrictions; I imagine there'd be a market for it with cryptocurrency. But at that point maybe you're better off just buying a gun directly on the black market.
I mean, it's really easy to build a 3d printer from scratch (I've done it before).
Also, fuzzy hashing is a thing, it doesn't have to be a perfect match to get detected. But really this isn't a big issue, since 3d printing firearms is legal in most of the US, and detection isn't common.
The article is about the UK, where you're not even allowed to carry pepper spray let alone 3D print a gun. And guns are at least heavily restricted in most countries so I assume that, even if 3D printers sold in the US don't have gun detection, it might be in 3D printers sold outside the US.