This first bill allows the state of California to regulate and oversee all 3D prints in the name of public safety.

  • benjirenji@slrpnk.net
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    19 hours ago

    The algos don’t need to deny any or every part of a gun, but the most critical part must not be printable and it’ll already be effective.

    I’m neither very experienced with firearms nor printing, maybe such a thing doesn’t exist for a gun, but I suspect there’s a few very important pieces that need to be printed a certain way or the firearm falls apart or is at least a lot less useful.

    All that said, I’m generally against such limiting mechanism in any printer or compiler. Try close sourcing all compilers so they can’t create malware? Forget it.

    • mic_check_one_two@lemmy.dbzer0.com
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      17 hours ago

      3D printed gun designs these days don’t even use plastic for most of the critical parts. The goal is to print a frame, which you can then assemble into a full gun using durable off-the-shelf parts that are available from any hardware store. No need to 3D print a bolt (and deal with all of the manufacturing issues that entails) when you can just buy a bolt for 5¢ at any hardware store. Especially when that bolt will be more precise and durable than the plastic bolt you would have printed.

      It’s the old carpentry idea that if you can’t get precision by hand, you can borrow it from something else. Need to cut a bunch of identical boards, with precision in 64ths of an inch? A #8-32 bolt will have 32 threads per inch. So a half turn on the bolt will advance or retract the bolt 1/64 inches, accurate down to whatever the bolt manufacturer’s clearance is. Probably a few thousands of an inch. Build a jig to hold your boards at the saw, and thread a bolt into the jig to act as the board stop. Now you can turn the bolt to adjust your clearance as needed, and you’ll be accurate down to 1/64 by only making half turns each time.

      And 3D printed guns use the same concept. You don’t print a plastic barrel that will explode after two or three shots, you just leave a void for a store-bought pipe to fit into the frame. The pipe will be more durable and more precise than anything you could feasibly print. You don’t need to 3D print a firing pin that will blunt/shatter/jam after a few uses, when you can just use a steel nail that will have better durability and avoid jamming. And all of the parts you need can be bought at a hardware store without raising any suspicions. That’s part of what makes this so dumb. They’re not just requiring printers to scan for potential gun parts. They would require printers to scan for anything that could potentially hold or manipulate gun parts. And that is a much broader spectrum than simply scanning for the shapes of the parts directly.

      • lando55@lemmy.zip
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        9 hours ago

        you just leave a void for a store-bought pipe

        So you’re saying the answer is to scan for voids! Thanks for your technical input

        • your congressman, probably
      • starman2112@sh.itjust.works
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        15 hours ago

        They would require printers to scan for anything that could potentially hold or manipulate gun parts.

        It’s worth explicitly noting that this effectively bans 3D printing entirely. The whole point of this law is to be able to charge owners of 3D printers with a crime. Real useful if they find out some anti-zionist protestor has a 3d printer in their garage. Can’t get ya on the free speech thing, but they can get you on the owning a non-compliant 3d printer thing.

        For the rightoids out there, replace anti-zionist protest with anti-abortion protest. Or any other speech the government doesn’t like. This exists for the sole purpose of punishing innocent people.

    • jballs@sh.itjust.works
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      19 hours ago

      I’m neither very experienced with firearms nor printing

      Unfortunately that’s the crux of the issue. The people who have written and signed this bill aren’t either - and they weren’t as big of a person as you to recognize that.

      At the end of the day, 3D printing gcode is telling your printer to spit out a shape. And you simply cannot ban shapes. Am I printing a firing pin or a part for my shoe rack? There’s no way to tell. Any politician that’s telling you there is is either ignorant or lying to you.

      • Crozekiel@lemmy.zip
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        18 hours ago

        Worse still, gcode is literally just telling a machine which motors to move and how much. You need something that can interpret those instructions (thousands of lines of code even for pretty simple prints) correctly and “draw” the shapes it is making. There are a lot of printers out there that do not have the hardware on board to do this.

        And that is all ignoring the absurdity of recognizing shapes as “gun parts”… The hardware hurdles pale in comparison to the software ones.

        • Semperverus@lemmy.world
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          15 hours ago

          You’re gonna hate this, but… AI can literally do it, and for the large models it’s terrifying how accurate they are. You will argue that your little ESP32 powered reprap or klipper or whatever printer can’t handle it, to which regulators will go ok then, either the printer has to call out to a service with an http request to upload the gcode every time it wants to print anything, or your slicer has to do it (and we dont care that it’s open source, it’s illegal to operate if it doesnt make the call and you’re getting fines or jail time if you get caught).

          This is what AI was built for 😟

          • MrQuallzin@pie.eyeofthestorm.place
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            15 hours ago

            Even AI can’t do this. It is an impossibility. AI might be able to make the shape, but it will NEVER be able to interpret the intent of that shape. It will never know if a cylinder is meant for a gun or for a rolling pin. It will never know if I’m making a trigger for a gun or a replacement trigger for my hot glue gun.

            • starman2112@sh.itjust.works
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              14 hours ago

              But it CAN force your printer not to print that replacement hot glue gun trigger. After all, there’s nothing in the law that says that this software has to allow non-gun related 3D printing. The simplest way to be in compliance with this law is to simply prevent all print jobs

              • HertzDentalBar@lemmy.blahaj.zone
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                12 hours ago

                You understand that this makes it impossible to implement right? It’s to vauge and will damage profitability of large companies, meaning courts will gut or kill this shit.

          • starman2112@sh.itjust.works
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            14 hours ago

            AI cannot be made to recognize whether a piece of gcode is intended to produce a piece of plastic that is intended to be used as part of a gun. It would need to simulate the machine that that gcode is made to run on, and then simulate the gcode running on that machine, and then analyze the simulated output of that simulated 3D print.

            At best, it can arbitrarily decide to decline print jobs. Which is of course the whole point, because anyone with a printer would need to bypass this filter, and bypassing this filter would be against the law.