Looks even more draconian than the New York law. For example, it seems to mandate proprietary, locked down slicers from the printer manufacturer.
--
For integrated preprint software [slicer] design, guidance for how vendors shall demonstrate that printers will accept print jobs exclusively through authorized and validated software systems and will not accept print jobs from unauthorized software pathways, including attempts by users seeking to evade a detection algorithm.
Over the last few years, I’ve felt as though I’ve been living in a feverish dream all the time. Laws, regulations and general changes in the world are so detached from reality and so far removed from the reality they are meant to serve. And this is yet another example.
California voters, write to your state senator. I'm in San Francisco, and I wrote to Scott Wiener, who recently voted to pass this out of committee.
Before that when it was still in the assembly, I wrote to Matt Haney, which didn't do much good because he voted for it both in committee and for passage.
But, I feel like bay area legislators need to know many of their constituents know this bill is misguided and are paying attention. The tech capital of the world shouldn't have artificially impaired tools.
I share your hopeful optimism, but here's the reality of the mass-email campaigns targeting congress:
[email received 6/18/26 from the office of Steve Scalise, majority leader in the house, who is one of my representatives. I have trimmed for brevity.]
>>
Due to advancements in technology, many third-party organizations use their mailing lists to send advocacy letters like this on your behalf. With the increased volume of third-party letters being sent to my office, I want to be sure that I am able to more appropriately address your thoughts and concerns.
I will be sure to consider the views you have sent me, but if you have any additional thoughts on this issue, or need other assistance with a federal agency, please contact my office directly through my website scalise.house.gov or by calling (202) 225-3015
-----------
In case it is not clear to anyone reading, this is kosher political speak for "I am ignoring automated emails. Consider this your notice."
Honestly, I am surprised it took this long, although I'm quite certain it has been going on for a lot longer and generally they simply do not provide the courtesy of telling you they are ignoring you.
Also, if you have a couple extra minutes to spare, consider handing the letter and the name of your senator to an LLM (I used Deepseek V4 Pro) with instructions to research your representative and tailor the message to them specifically.
Imagine if you couldn't buy a lathe unless it refused to make a baseball bat (which could be used for hitting people).
Or if you couldn't buy scissors (because they could cut brake lines).
Or if you couldn't buy a car (because it could be used to run someone over).
And if all of those checked with the government before functioning.
It's almost like maybe instead you should just ban the undesirable end action, enforce that law, and create societal conditions that don't nudge or force people into doing undesirable things.
If this becomes law, it will give rise to a fun new form or protest art in this vain. What is the cutest thing you can design that nobody would consider to be related to guns, but which gets flagged? An obvious example... a llama sitting on the ground, legs hidden, and head held high in the air, chewing its cud. Llamas can be really cute! Sell them on Etsy/eBay/etc., printed by an out-of-state 3D printing service. I just used the EFF form to promise my state senator in Sacramento that I'd send her (and reporters that cover her) one of them if the bill passes.
But seriously, given that the 3D printer movement started out with people building their own printers from scratch and there continues to be a healthy open-source hardware ecosystem within the community, I can't see this stopping anyone.
Unless you also make it illegal for 3D printers to print 3D printer parts...
As a non american it always seems like California is the most retarded state. Is there some kind lead contamination in the ground water? Of course, we have to deal with the EU, so I'm not throwing stones... just pondering.
We just reeeeeally want to believe, more than other states, that our government is The Good Guys and we can Fix The Problems if we only added more laws and more taxes. Every two years we are presented with 20 earnest-seeming ballot measures that each have roughly this message:
> "We have a major problem in California -- ____ is not as ____ as it should be. Prop 1234 authorizes the state to sell $__,000,000,000 in bonds[1] to be repaid over the next 30 years. This will completely fix the ____ problem. By the way, it looks like a lot, but it's actually a good investment that will SAVE TAXPAYERS MONEY in the future."
Then we get another almost identical one in 3 years saying that ____ is worse than ever and this new round of $__,000,000,000 will finally fix it once and for all.
Voters approve like three quarters of these, and usually don't even remember we just gave them billions of dollars to fix the same thing a few years ago. I've heard plenty of people in my social circle who basically vote by reading the supposed purpose from the title ("Anti-Homelessness", "Schools", "High-speed rail", "Animal welfare") and they vote based entirely on the assumption that this proposition is the only and best way to help the homeless, improve schools, etc. They don't even entertain the idea that the prop might be a pork-filled piece of trash written by lobbyists that might even make the problems worse while costing eleven figures and still not be paid for in 20 years.
We just trust Sacramento so blindly.
[1] That, or the other alternative funding: A tax raise "on big corporations" which will 100% definitely not affect you, dear voter.
Yes, that has been clear for a long time, about as long as CA has been a one-party state. The real question is why you supposedly smart Californians keep on falling for the... same... old... lie... every... damn... time. It is not as if the pie-in-the-sky people haven't promised a chicken in every pot and a cow in every shed and a car on every driveway - replace these with whatever modern equivalents you like - a thousand times before without delivering even a single chick, calf or push bike. Why do you keep on falling for the same old tired this-time-it-will-work lies? This is not limited to CA and might even become more prevalent in NY now that the DSA has seriously started to hollow out the remains of what used to be the Democratic party but it has been going on for much longer in the formerly Golden, now somehow tarnished state. Why? California Dreaming used to be a thing, not a nightmare.
Sometimes they do good. Prop 65 cleaned up off-gassing plastic products in the entire country. Harbor Freight stores used to be mini gas chambers leeching away your health.
I am old enough to remember when the fax machine first became ubiquitous in the 80's and read about how the Soviets were threatened by it. Unauthorized use was a crime and they stationed guards at fax machines to prevent mis-use. Perhaps I naively fell for CIA propaganda at the time but if true we can hope/estimate that California Commies will fall in less than 10 years since things are moving much faster in today's world.
--
For integrated preprint software [slicer] design, guidance for how vendors shall demonstrate that printers will accept print jobs exclusively through authorized and validated software systems and will not accept print jobs from unauthorized software pathways, including attempts by users seeking to evade a detection algorithm.
Before that when it was still in the assembly, I wrote to Matt Haney, which didn't do much good because he voted for it both in committee and for passage.
But, I feel like bay area legislators need to know many of their constituents know this bill is misguided and are paying attention. The tech capital of the world shouldn't have artificially impaired tools.
(did choose to edit the letter but otherwise really, it autofills and takes no time)
[email received 6/18/26 from the office of Steve Scalise, majority leader in the house, who is one of my representatives. I have trimmed for brevity.]
>> Due to advancements in technology, many third-party organizations use their mailing lists to send advocacy letters like this on your behalf. With the increased volume of third-party letters being sent to my office, I want to be sure that I am able to more appropriately address your thoughts and concerns.
I will be sure to consider the views you have sent me, but if you have any additional thoughts on this issue, or need other assistance with a federal agency, please contact my office directly through my website scalise.house.gov or by calling (202) 225-3015
-----------
In case it is not clear to anyone reading, this is kosher political speak for "I am ignoring automated emails. Consider this your notice."
Honestly, I am surprised it took this long, although I'm quite certain it has been going on for a lot longer and generally they simply do not provide the courtesy of telling you they are ignoring you.
Or if you couldn't buy scissors (because they could cut brake lines).
Or if you couldn't buy a car (because it could be used to run someone over).
And if all of those checked with the government before functioning.
It's almost like maybe instead you should just ban the undesirable end action, enforce that law, and create societal conditions that don't nudge or force people into doing undesirable things.
im looking forward to the idea that the outline of Ca. may trigger false positives
This joke of a law isn't going to stop any 3D printed handguns from getting made, it will only add one more relatively easy step.
Then what, ban stepper motors?
Don't give them ideas.
But seriously, given that the 3D printer movement started out with people building their own printers from scratch and there continues to be a healthy open-source hardware ecosystem within the community, I can't see this stopping anyone.
Unless you also make it illegal for 3D printers to print 3D printer parts...
> "We have a major problem in California -- ____ is not as ____ as it should be. Prop 1234 authorizes the state to sell $__,000,000,000 in bonds[1] to be repaid over the next 30 years. This will completely fix the ____ problem. By the way, it looks like a lot, but it's actually a good investment that will SAVE TAXPAYERS MONEY in the future."
Then we get another almost identical one in 3 years saying that ____ is worse than ever and this new round of $__,000,000,000 will finally fix it once and for all.
Voters approve like three quarters of these, and usually don't even remember we just gave them billions of dollars to fix the same thing a few years ago. I've heard plenty of people in my social circle who basically vote by reading the supposed purpose from the title ("Anti-Homelessness", "Schools", "High-speed rail", "Animal welfare") and they vote based entirely on the assumption that this proposition is the only and best way to help the homeless, improve schools, etc. They don't even entertain the idea that the prop might be a pork-filled piece of trash written by lobbyists that might even make the problems worse while costing eleven figures and still not be paid for in 20 years.
We just trust Sacramento so blindly.
[1] That, or the other alternative funding: A tax raise "on big corporations" which will 100% definitely not affect you, dear voter.