Forgot your password?
typodupeerror
Printer Electronic Frontier Foundation

California Ghost-Gun Bill Wants 3D Printers To Play Cop, EFF Says (theregister.com) 139

A proposed California bill would require 3D printer makers to use state-certified software to detect and block files for gun parts, but advocates at the Electronic Frontier Foundation (EFF) say it would be easy to evade and could lead to widespread surveillance of users' printing activity. The Register reports: The bill in question is AB 2047, the scope of which, on paper, appears strict. The primary goal is clear and simple: to require 3D printer manufacturers to use a state-certified algorithm that checks digital design files for firearm components and blocks print jobs that would produce prohibited parts. [...] Cliff Braun and Rory Mir, who respectively work in policy and tech community engagement at the EFF, claim that the proposals in California are technically infeasible and in practice will lead to consumer surveillance.

In a series of blog posts published this month, the pair argued that print-blocking technology -- proposals for which have also surfaced in states including New York and Washington - cannot work for a range of technical reasons. They argued that because 3D printers and other types of computer numerical control (CNC) machines are fairly simple, with much of their brains coming from the computer-aided manufacturing (CAM) software -- or slicer software -- to which they are linked, the bill would establish legal and illegal software. Proprietary software will likely become the de facto option, leaving open source alternatives to rot.

"Under these proposed laws, manufacturers of consumer 3D printers must ensure their printers only work with their software, and implement firearm detection algorithms on either the printer itself or in a slicer software," wrote Braun earlier this month. "These algorithms must detect firearm files using a maintained database of existing models. Vendors of printers must then verify that printers are on the allow-list maintained by the state before they can offer them for sale. Owners of printers will be guilty of a crime if they circumvent these intrusive scanning procedures or load alternative software, which they might do because their printer manufacturer ends support."

Braun also argued that it would be trivial for anyone who uses 3D printers to make small tweaks to either the visual models of firearms parts, or the machine instructions (G-code) generated from those models, to evade detection. Mir further argued that the bill offers no guardrails to keep this "constantly expanding blacklist" limited to firearm-related designs. In his view, there is a clear risk that this approach will creep into other forms of alleged unlawful activity, such as copyright infringement. [...] Braun and Mir have a list of other arguments against the bill. They say the algorithms are more than likely to lead to false positives, which will prevent good-faith users from using their hardware. Many 3D printer owners also have no interest in printing firearm components. Most simply want the freedom to print trinkets and spare parts while others use them to print various items and sell them as an income stream.

This discussion has been archived. No new comments can be posted.

California Ghost-Gun Bill Wants 3D Printers To Play Cop, EFF Says

Comments Filter:
  • by awwshit ( 6214476 ) on Tuesday April 14, 2026 @05:05PM (#66093852)

    The metal parts I cut by hand on the mill are better quality anyway. Will that make me an illegal human?

    • Exactly my thoughts about this. They'll have to sell "smart steel" that knows when it's being made into something illegal.
    • Re: mill (Score:2, Interesting)

      Being in the firearms business without an FFL will make you a human doing illegal things. Even if you do it with a file and hand-crank drill.

      The problem, as you may have guessed, is not that off-the-books firearms manufacturing is illegal. The problem is that the state is getting lazy and doesn't want to enforce its laws. It wants shortcuts, and consequences be damned.

      The charitable explanation is that the people who comprise the state are also lazy. They therefore believe the designated scapegoat (phones,

      • Re: mill (Score:5, Informative)

        by I kan Spl ( 614759 ) on Wednesday April 15, 2026 @12:14AM (#66094310)

        It is perfectly legal, even in California, to make your own firearm. That isn't the issue here.

        There are some regulations on it. You have to request a serial number from the State prior to manufacturing it, and requesting a serial number will kick off a background check to ensure that you can own it. See here:
        https://oag.ca.gov/firearms/us... [ca.gov]

        Additionally, you would need a permit from the Federal Government (a FFL07) if you want to have a business selling firearms that you manufacture. Note the nuance here, it is legal to make firearms without the Federal permit as long as you don't sell them after manufacturing them, and as long as you comply with all applicable state laws, which in California, involves applying for a serial number each time.

        Neither of the above issues would be addressed via this legislation.

        If the State wants to make it illegal to manufacture a firearm, then they should pass a law to that effect. They are instead regulating a tool such that the tool will refuse to produce an otherwise legal to make device, and they are doing so in such a way that can't actually work from a technical standpoint.

        • by AmiMoJo ( 196126 )

          The issue is that making your own out of metal requires skill and expensive equipment. 3D printers are cheap and at the point where even a novice can press print and get a working part out of it.

          The same thing happened with colour photocopiers. You could always forge paper money, but colour photocopiers made it as easy as pressing a button. Photocopiers implemented bank note detection to prevent users copying them, as did scanner software and apps like Photoshop.

          I would imagine that 3D printer manufacturers

          • Photocopiers implemented bank note detection to prevent users copying them, as did scanner software and apps like Photoshop.

            Yes, that ass-backward approach came in my mind.
            Your bank notes are too easy to copy now that color photocopiers and color laser printers are a thing?
            - Rest of the world: make better banknotes (see swiss money, euros, etc.)
            - USA: make bank note detection software mandatory on each piece of tech (HP and other US manufacturers have a boner at the thoughts of the sudden illegalness of cheaper competitors from countries without that function) and also mandate yellow dot tracking (now in addition the police-stat

            • by AmiMoJo ( 196126 )

              I'd say that the bigger issue for 3D printers is that many people run open source firmware which is unlikely to implement these restrictions.

          • The issue is that making your own out of metal requires skill and expensive equipment.

            Yes, because guns were never made by hand before the invention of CNC. It is quite doable to make a gun or any of it's parts by hand, it just takes alot of time and effort. A law that tries to prevent easy manufacture will not stop someone who is determined. It's just another stupid unenforceable code that will be ignored. However it did enriched the bank accounts of the politicians who proposed it

      • Being in the firearms business without an FFL will make you a human doing illegal things. Even if you do it with a file and hand-crank drill.

        Not federally.

        It has always been legal in the US to make your own firearms for PERSONAL use.

        You can make all the firearms you want, but, you cannot sell them, nor give them away....no serial number required, etc.

        This has been the long standing right all US citizens have enjoyed since the country began.

        It's only recently where companies made this a bit easier to do

    • You're safe, it's California. It's been stolen so many times that Rockstar has a valid "stolen land" claim.
  • We already do this for currency - https://en.wikipedia.org/wiki/... [wikipedia.org]
    • by spitzak ( 4019 ) on Tuesday April 14, 2026 @05:25PM (#66093886) Homepage

      If there was exactly one pattern that produced a "gun" then it would be possible to block it. However a gun will work with quite large variations to the pattern, unlike a dollar bill.

      • If there was exactly one pattern that produced a "gun" then it would be possible to block it. However a gun will work with quite large variations to the pattern, unlike a dollar bill.

        Website CSAM [wikipedia.org] blocking works by downloading a current list of known hashes. If counterfeiting currency can blocked on printers it seems blocking gun blueprints can be managed more or less as effectively as child pornography on websites. [projectarachnid.ca]

        • by realxmp ( 518717 )

          If there was exactly one pattern that produced a "gun" then it would be possible to block it. However a gun will work with quite large variations to the pattern, unlike a dollar bill.

          Website CSAM [wikipedia.org] blocking works by downloading a current list of known hashes. If counterfeiting currency can blocked on printers it seems blocking gun blueprints can be managed more or less as effectively as child pornography on websites. [projectarachnid.ca]

          Honestly if you think this is going to work, I'd advise you get out of IT, you're not devious enough to imagine how people will get around this. Image feature hashes that are robust to minor changes to the image are hard, and they're just a 2D problem.

          What you're proposing is going to turn 3D printers from simple microcontroller based printers into something requires a fairly sophisticated AI in order to try and understand the shapes being sent to them. See you're not just going to have to block guns, you'r

    • by nyet ( 19118 )

      This is the dumbest analogy for this i've seen yet

      • This is the dumbest analogy for this i've seen yet

        Which is, no doubt, why our congresscritters think it's a pretty good analogy.

  • BAN IRON (Score:4, Interesting)

    by ebunga ( 95613 ) on Tuesday April 14, 2026 @05:14PM (#66093866)

    Make all unlicensed possession of iron a punishable offense. There's no reason any human should have iron on or about their person unless they are attempting to make a dangerous and deadly weapon. NO EXCEPTIONS.

  • Most 3d printers can directly print from a sliced model from a usb stick. Most 3d printers donn't have the compute power to render then identify what the sliced file is. They simply have enough compute power to read the coordinates from the file, and move the extruder to said coordinate while ejecting molten plastic
    • Only two ways this is happening. Require an unneeded amount of compute power in a 3d printer just to do the identification. Ban printers that can print stand alone off a USB stick and require them to be tethered to a PC and do the identification in the 3d printer software running on the PC.
      • Because motors could be used to drive an unlicensed CNC machine. And maybe ban magnets too. Who needs magnets?

      • It would be interesting to test the law in the following way.

        Instead of directly printing a desired part (say, the frame for a Glock clone, which holds the rails that turn it into a receiver), print a mold which can then be used using casting or injection molding to mass produce the desired part.

        Text of the law:

        https://leginfo.legislature.ca... [ca.gov]

        As defined in the bill:

        "(g) âoeIllegal firearm partsâ means a firearm precursor part and any part designed and intended for use in converting a semiautomati

      • Method 3) Require all printers to report to the state what they're going to print and get back if they're allowed to print it or not.

        Bonus, any industry which is worried their products might get cloned will support this as it provides a blacklist that anyone with copyrighted designs can submit their design to. Double bonus, if the state finds you're printing something registered, they can collect a fee from you on behalf of the company that registered it. Triple bonus, if your printer is too old to have t

    • by Jaime2 ( 824950 ) on Tuesday April 14, 2026 @05:47PM (#66093936)

      If it does happen, it will do nothing but turn the 3D printer hobby market into a market similar to the "get free movies/TV/sports on this magic streaming stick" market. I built a CNC stepper controller from discrete components connected to a DOS computer in the 90's. I wrote my own limited CAM software, too. Things have only gotten easier since then.

      • If they build the identification into the slicer software, there will just be a black market for files / thumb drives with pre sliced "parts"
    • Doesn't klippers rendsr the stl files being printed as a preview?

    • The printer can require the gcode to be signed by a government service that does the verification. The slicer will have to upload the shape file to the service to get it approved and signed. Possessing firmware that bypasses this will be a criminal offense.

  • This is obviously impossible unless almost any moving parts are prevented, or printing with some materials is prevented. That would make it impossible to 3D print lots of stuff that is not illegal.

    The effect on open software and hardware is also disastrous.

    As others pointed out, currently you can make better gun parts on some non-computerized equipment, so this also does not seem to prevent anything.

    • by spitzak ( 4019 )

      PS I am not a gun nut. If guns were illegal then printing parts of them using a 3D printer would also be illegal and you could get in a lot of trouble if you do it. But after the fact, don't try to prevent it first.

      Is cooking equipment supposed to not work if it figures out it is being used to make drugs?

    • by rskbrkr ( 824653 )

      The effect on open software and hardware is also disastrous.

      Only if other states adopts this or similar laws. Otherwise, it's a simple workaround to buy whatever printer you want in Nevada. It would be perfectly legal too, since the law doesn't ban imports, only sales and transfers of non-compliant printers.

  • But they will have to close every bicycle repair shop to prevent the metalworking tools necessary to produce ghost guns from illicit use.

  • by WaffleMonster ( 969671 ) on Tuesday April 14, 2026 @05:40PM (#66093922)

    It isn't like you tell a 3D printer you want a gun and a few hours later one appears. What is printed are a series of discrete components the user assembles into a finished product.

    Here are the parts for one of the 3D printed designs:
    https://upload.wikimedia.org/w... [wikimedia.org]

    Not only is locking this down a fools errand as anyone wanting to print firearms is just going to bypass the restrictions.. even if they don't there is no way for a computer program to discern whether or not a discrete component is part of a weapon anymore than the hardware store the bolts and springs were purchased from can discern intent to produce a weapon.

    • tell a 3D printer you want a gun and a few hours later one appears

      Well actually, that would be a good AI integration. We could see something like that in a couple years. It would move us a significant step closer to having home replicators. Need a hanger? Ask your printer. Needs plates for a party? Print some out then wash and melt them back down to pellets afterwards. Print out a new phone case, eye glass frames, single use screwdriver, dice, etc... You no longer need to store a bunch of rarely used items. Just print what you need when you need it and melt/grind

  • The result would be to breathe life back into the DIY hobby. Stepper motors would be nearly impossible to regulate. The rest is just parts.
  • by MpVpRb ( 1423381 ) on Tuesday April 14, 2026 @05:42PM (#66093930)

    ...that politicians are totally clueless about technology

    • by Retired Chemist ( 5039029 ) on Tuesday April 14, 2026 @05:45PM (#66093934)
      Nor do they care. It is all about what the electorate, which knows even less, thinks about the idea.
      • Nor do they care. It is all about what the electorate, which knows even less, thinks about the idea.

        Not really. It's about which phantom wedge issue gets more people to show up on Election Day. That's why neither sides want to actually fix the problems.

      • Nor do they care. It is all about what the electorate, which knows even less, thinks about the idea.

        This is about stopping right to repair, and guns are being used as the boogeyman to frighten people into accepting it. Monied interests would ban all 3-D printing if they could.

    • Adding more evidence to the claim that politicians are totally clueless about technology

      It may be a somewhat recent phenomenon with respect to computers, but with respect to firearms its been on display for even longer.

    • Politicians do not want to solve problems. They want to be seen to be "fighting for you" so that they can get re-elected. The more controversy the better.

      Politician1 can argue they want a law to protect you from $bad_thing! Politician2 can argue that they are fighting to prevent Politician1 from taking away your rights. It generates votes (and donations) for both of them.

    • That's adorable. They don't give a shit about technology, just preserving their own power.
  • they can create an algorithm to stop someone from printing a ghost gun part is daft. First of all, just move one state over, or for that matter, change the country code on your 3d printer or use modified software. There isn't going to be an algorithm that can check to see if you've made a part, you can slice it. But what I think they really want is the surveillance, so they could watch people print out parts. But then again that will be easily evadible, if you can't stop a gun from going into a place, you w

    • Again, I just read the linked proposed law. I can get a nice piece of walnut, and make my own grips. Is printing grips illegal? Right now, you can buy a new trigger online, or you can print one. How about sights? Most modern sights are polymer. You can buy replacement parts legally, or you can print your own.

      You can buy a barrel. I have gunsmith friends that make their own slides (on a CNC machine). Is that now illegal?

      Go and read the bill. Tell me exactly which parts are illegal to make. Specifi

      • by drnb ( 2434720 )

        Tell me exactly which parts are illegal to make. Specifically.

        In California a pistol grip, flash suppressor, or bayonet lug.

      • My opinion is that they are having their cake and eating it too:

        https://leginfo.legislature.ca... [ca.gov]

        "(b) âoeFirearmâ has the same meaning as defined in subdivision (a) of Section 16520 of the Penal Code.
        (c) âoeFirearm blocking technologyâ means hardware, firmware, or other integrated technological measures capable of ensuring a three-dimensional printer will not proceed to any print job unless the underlying three-dimensional printing file has been evaluated by a firearms blueprints detecti

  • Anything printed for a gun is a plastic version of what used to be made in wood. This is beyond cretinous.
  • If I want to go and make my own trigger, that is perfectly legal. My own sights, grips.... You name it.

    These people understand that it is perfectly legal to buy a barrel, trigger pack, slide, spring kit.... Right?

    Is it now illegal to make my own grips out of a nice piece of walnut? Which parts - specifically - are you allowed to buy through the mail, but not make at home?

    • It is quite insane as it criminalizes a very specifc method of production. You can make an injection mold and produce the same part, but apparently using the same material using a slightly different process is not allowed.

      However, this is California. Using pepper spray is allowed, but pepperballs are considered a tear gas grenade delivery device and illegal for use by civilians.

      https://www.sandiegouniontribu... [sandiegouniontribune.com]

      Yes, you can own pepperball launchers. You just can't possess or use pepperballs:

      https://shop.p [pepperball.com]

      • I think you could probably make a convincing argument that what software you choose to make is protected speech, and that this law is unconstitutional.

        • Sure. I encourage you and like-minded individuals to file suit against Sacramento and enjoin the suit in the appellate courts. Or, you could, yanno, join the rest of us and not complying.
  • by gweihir ( 88907 ) on Tuesday April 14, 2026 @06:11PM (#66093970)

    Obviously, they do not. This is completely impossible to do. Nobody can identify "gun components" from a g-code stream that is playing in real-time while the printing happens. That is just not how CNC (large or small) works.

    • Obviously, they do not. This is completely impossible to do. Nobody can identify "gun components" from a g-code stream that is playing in real-time while the printing happens. That is just not how CNC (large or small) works.

      The problem is the serial number is printed on the receiver which is just a block that holds the all important properly made barrel without which you aren’t going to have almost any accuracy or velocity both of which actually separate it from a crude barely functioning weapon and an accurate and powerful one. Putting the serial number on the barrel and regulating that makes far more sense, you can’t even rifle the barrel properly without specialized equipment that’s not run of the mill CN

      • by gweihir ( 88907 )

        Agreed. You cannot make even somewhat decent gun components on a cheap 3D printer. That is the other problem with this law.

      • by 0123456 ( 636235 )

        > you can’t even rifle the barrel properly without specialized equipment that’s not run of the mill CNC

        Burmese rebels have been using semi-auto 9mm carbines which require no firearms parts other than the ammo. An Indian guy made a .22 AR-15 with a few basic tools and some parts he bought from Aliexpress.

        Humans are much more innovative than you seem to believe. This law will just criminalize people who aren't a problem while criminals buy real guns from the black market.

      • by PPH ( 736903 )

        Putting the serial number on the barrel and regulating that makes far more sense,

        Not really. Barrels are consumables. They need occasional replacement.

        you canâ(TM)t even rifle the barrel properly without specialized equipment thatâ(TM)s not run of the mill CNC.

        I've seen some rifling jigs made from all-thread, bolts and an angle iron frame. The trick is just to pull the rifling button through a piece of bored rod. Homemade buttons made from hardened tool steel will do for a production run in the dozens of parts. Carbide is only needed for actual commercial production runs.

        And then there are home made EDM machines.

        • Not really. Barrels are consumables. They need occasional replacement.

          Yes really. Where is there a law limiting the number of guns you may own? Simply buy a new barrel, you’re done it’s repaired. Are you trying to make a metaphysical argument about the gun of Theseus?

          I've seen some rifling jigs made from all-thread, bolts and an angle iron frame. The trick is just to pull the rifling button through a piece of bored rod. Homemade buttons made from hardened tool steel will do for a production run in the dozens of parts. Carbide is only needed for actual commercial production runs.

          Where does a 3-D plastic filament printer figure in because it’s not possible to make a barrel with plastic when the pressure climbs to many tens of thousands of PSI in a proper barrel. Even a half million dollar metal printing machine isn’t going to make a barrel that’s reason

          • by 0123456 ( 636235 )

            You should really take a look on the Internet before making these kind of posts. People have been making decently-accurate 9mm barrels at home for about ten years now, and it's clearly fairly popular because if you look up one of the required tools on Amazon the site recommends some of the others that are needed.

            I haven't really been following this for a couple of years so I don't know whether anyone has progressed past rimfire barrels for rifles, but anyone can make pistol and shotgun barrels by spending $

            • None of that refutes the argument the hardest component to make and the one most integral to a gun and the one that can’t be made on a plastic printer is the barrel. With a 3-D printed receiver that’s also stupid simple to make with hand tools you just buy a proper barrel just like about every single last 3-D design thats out there. The big mistake was to think the receiver was the hardest part to make when it never was. You can make a simple hole with a hand drill and use a simple adjustab
              • by PPH ( 736903 )

                None of that refutes the argument the hardest component to make and the one most integral to a gun and the one that canâ(TM)t be made on a plastic printer is the barrel.

                Well then the regulators are screwed. Because barrels are pretty easy to make.

  • by jenningsthecat ( 1525947 ) on Tuesday April 14, 2026 @06:31PM (#66094000)

    First, the gun problem is pretty much specific to the US. Other developed countries get along without "muh gunz" for the most part, and their societies haven't fallen prey to dictators. Yet ironically, the "land of the free" is now a Fascist dictatorship, in spite of all those armed citizens. So much for taking up arms to dethrone tyrants! Maybe the US should just re-think this whole "guns are sacred" thing?

    Second, in a country which just this year has had 21 school shootings as of today [cnn.com], the real problem isn't printed guns. It's a whole set of cultural, social, political, and governance flaws which need to be fixed. Other developed countries have nothing even close to the gun problem that Americans put up with. Citizens of other nations don't feel a moment of panic and start scoping out shelter and escape routes when they hear some random loud bang while walking down the street.

    Leave the 3D printers alone. That's a war that can't be won; those laws will make it more difficult and costly for individuals and businesses to print benign stuff, while doing almost nothing to prevent those serious about printing guns from doing so. Don't hobble your 3D printers - fix your social, political, cultural, and economic shit.

    • by markdavis ( 642305 ) on Tuesday April 14, 2026 @07:57PM (#66094124)

      >"First, the gun problem is pretty much specific to the US"

      The 2A is not a "problem", nor is good people owning/carrying guns. There are problems with violence, both with and without guns, and that is not "specific to the USA". There are also problems with enforcement and follow-through for existing gun laws. Worrying about 3D printers is ridiculous. But so are many other types of "gun control" like so-called "gun-free zones."

      >"Second, in a country which just this year has had 21 school shootings as of today,"

      "School shootings" is a semantically-overloaded term. Most are not in the school, but on property around the school. Usually those shot are also not related to the schools and often not even during school hours. I am not saying it isn't a problem, but the data are often twisted to make it sound far worse than it is. And that is the case with the article you cited. They hide the ACTUAL data, like category of who was shot, when, exactly where (inside, outside, field, woods, parking lot), and full circumstances. Their data INCLUDES self-defense use, for example. It INCLUDES non-school gang-related activity. It INCLUDES at night or non-operating hours. It INCLUDES a public sidewalk or edge of the woods, or parking area far away from any building.

      >"the real problem isn't printed guns. It's a whole set of cultural, social, political, and governance flaws which need to be fixed"

      Agreed.

      >"Citizens of other nations don't feel a moment of panic and start scoping out shelter and escape routes when they hear some random loud bang while walking down the street."

      Neither do perhaps 99%+ of Americans. The vast majority of the gun crime is focused in small geographical spots in the USA.

      >"Yet ironically, the "land of the free" is now a Fascist dictatorship"

      That is, of course, nonsense.

      >"Leave the 3D printers alone"

      Agreed.

    • The only problem I see with your argument is that the same people who want the guns want the fascism.

      • On the contrary, there has been a large surge in left leaning gun owners, starting in 2020, and then accelerating significantly this year. Those who don't want fascism want guns, to prevent fascism.
    • >>...and their societies haven't fallen prey to dictators

      Hungary, Yugoslavia, Czechoslovakia, France (in times past), Germany, Italy might disagree with you on that.

    • by mjwx ( 966435 )

      First, the gun problem is pretty much specific to the US. Other developed countries get along without "muh gunz" for the most part, and their societies haven't fallen prey to dictators. Yet ironically, the "land of the free" is now a Fascist dictatorship, in spite of all those armed citizens. So much for taking up arms to dethrone tyrants! Maybe the US should just re-think this whole "guns are sacred" thing?

      Second, in a country which just this year has had 21 school shootings as of today [cnn.com], the real problem isn't printed guns. It's a whole set of cultural, social, political, and governance flaws which need to be fixed. Other developed countries have nothing even close to the gun problem that Americans put up with. Citizens of other nations don't feel a moment of panic and start scoping out shelter and escape routes when they hear some random loud bang while walking down the street.

      Leave the 3D printers alone. That's a war that can't be won; those laws will make it more difficult and costly for individuals and businesses to print benign stuff, while doing almost nothing to prevent those serious about printing guns from doing so. Don't hobble your 3D printers - fix your social, political, cultural, and economic shit.

      So... America... With access to all those guns when are you going to stand up to the orange dictator who's taken over the "land of the free"?

  • by hambone142 ( 2551854 ) on Tuesday April 14, 2026 @07:40PM (#66094100)

    Sacramento is in itself, a dangerous neighborhood. Gang bangers are shooting at innocent people across the street from the State Capitol. Politicians can't even keep their own neighborhood safe with their silly laws. They had to put a fence around the state capitol. I'd challenge all of them to take a stroll down some of their neighborhoods after dark.

  • If you commit a violent crime that involves a firearm you go to prison for life. No parole, no pardons, nada. If you kill someone with a firearm you get a free dirt nap compliments of the justice system.

    • Soon any copyrighted shape.

      If not sooner any part for any intellectual property of any design of any kind. It really gets under the skins of companies when instead of being forced to buy a cheap plastic part for hundreds of dollars you can just print it for a few dollars of filament.

  • Stuff that isn't compliant will be easily available anywhere near one of California's major ports. Many of these ports are significant foreign-trade zones that not only avoid Federal customs inspections, they of course completely side-step any California state regulation thanks to the supremacy clause.

    A nation-wide ban might be more effective. But really, replacing your 3D printer's software with a different package is trivial and often a prerequisite to even getting it set up in the first place.

    This law be

  • Unless they want to play a cat and mouse game with the designers, you just can't make something that can detect a 3D model of a gun 100% reliably, they would have to do a per model basis ban.

  • This is just the latest attempt to distract California citizens from something else that is going wrong in California.

    As I've pointed out in other threads there are no laws in the USA that prevent someone from making a gun from scratch. If you can legally own a gun, i.e. your not a convicted felon, underage, etc. you can build on for yourself. It has to be within the existing law regarding barrel length, over all length, can't be full auto, and you can't sell or otherwise transfer it to another.

    A trip to

  • Requiring cars to not allow themselves to be used as getaway cars in armed robberies, whether autonomous or not.

    Any politician who votes for this has proven themselves unfit for the purpose for which they were elected, and should be declared to be inadequate for any office, let alone a "high office".

    In my view, they should be required to get a medical certification that they are sane before they are allowed out of the house.

    Disclaimer: I do not reside in the USA.

  • Anyone who knows 3d printers would recognize the sheer absurdity of suggesting a printer infer it is making a part for a gun. By the time a model reaches a printer it has been sliced and turned into GCODE from hundreds of parameters and there is NO WAY that any printer could tell what the hell it is printing. Nor could the software which does the slicing, since parts could be oriented any way making it extremely hard to recognize a part. And even if there was a database to search against matching shapes in
  • ...the country where you can buy firearms at Walmart wants to restrict 3D printing because they worry about gun parts?

    What drugs are these people on?

  • How the heck is a printer supposed to recognize the purpose of a particular object that it is printing? Anyway, building your own firearms is (afaik) entirely legal - you just aren't allowed to sell them.

    Want a stupid-simple gun? Start with a piece of iron pipe, with an iron cap on one end. Drill a small hole in the cap, put a nail through it to serve as the firing pin. Voila: an incredible primitive gun. Are we going to outlaw plumbing supplies and nails?

  • Ironically, gunmakers do not want you printing your own guns, either. Many 3D printers are home-built, as mine was, Such a bill is just a bad idea.
  • Another CA bill that has no clue on how things work. Age limits for OS, 3d printer saying what you can and cant print. People who could care less and will do what they want with the things they have.
  • Gun this, gun that, blah blah blah.

    I'll send my perfectly legal swarm of mini drones at you after I've sharpened their rotor blades to knife points and add a little mod to self-ignite their battery pack. Guns shoot one person at a time from one location. Each drone can follow and hit one person and still work even if the operator is down. No need for the operator to even stay in the area.

    It's a good thing most violent criminals are stupid and most people aren't interesting in fighting each other.

"Nature is very un-American. Nature never hurries." -- William George Jordan

Working...