California’s new bill requires DOJ-approved 3D printers that report on themselves targeting general-purpose machines.
Assembly Member Bauer-Kahan introduced AB-2047, the “California Firearm Printing Prevention Act,” on February 17th. The bill would ban the sale or transfer of any 3D printer in California unless it appears on a state-maintained roster of approved makes and models… certified by the Department of Justice as equipped with “firearm blocking technology.” Manufacturers would need to submit attestations for every make and model. The DOJ would publish a list. If your printer isn’t on the list by March 1, 2029, it can’t be sold. In addition, knowingly disabling or circumventing the blocking software is a misdemeanor.
Print the parts for a new printer on a cheap one, buy the hardware at a local hardware store or electronics store (or even strip the cheap one for most of the parts), and start printing in your favorite flavor of open source software. Or buy the printed pieces from someone or online and then buy and assemble the rest. That's what they do with guns to circumvent some of the gun laws, because the not quite finished pieces are not legally considered a gun.
All this would do is make people buy printers the way that they buy guns, ironically. And it still won't do anything about the so-called "ghost guns" anyway, because those are either legally bought guns with the serial number shaved off, or they're garage guns like the one used to assassinate Shinzo Abe.