Posted on 10/10/2026 9:33:02 AM PDT by lowbridge
San Diego County jumped into California’s sprawling ghost gun fight this week, suing a 3-D printing filament manufacturer it says hocks material for homespun firearms in violation of state law.
Working with the Giffords Law Center, the county counsel sued manufacturer Polymaker, alleging the company made a “strategic business choice” to market and sell 3-D printer filament to Californians for the express purpose of building illegal weapons. The polymer filament is sold in spools that feed into 3-D printers, allowing the devices to form designs created by their owners.
“Unlike ghost guns assembled from commercially sold unfinished parts, 3D printed ghost guns can be produced from plastic filament using consumer-grade equipment,” the suit said. “Upon acquiring a 3D printer, a fully functional, untraceable firearm can be printed and assembled by anyone in less than nine hours.”
This spring, the San Diego Police Department’s Ghost Gun Team recovered spools of the material from the home workshop of a 16-year-old would-be school shooter, along with printed guns and firearm parts they believe he intended to sell — evidence, the suit said, of the manufacturer’s harm to the state.
Polymaker did not respond to requests for comment.
The spool suit is the latest in a coordinated effort by California’s municipalities and the state attorney general’s office to throttle the bootleg gun industry by stanching the flow of its precursor components.
In February, the San Francisco city attorney’s office partnered with the California attorney general to sue the online library Gatalog, whose popular digital firearm manufacturing codes can produce more than 150 different 3-D-printed guns and accessories.
“Widely available consumer-grade 3D printers capable of printing firearm parts, frames, receivers, and accessories now start at about $200 and are compact enough to fit on a small table,” the complaint alleged.
(Excerpt) Read more at latimes.com ...
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Related:
Federal Court Holds Delaware “Ghost Gun” Possession and Home-Manufacturing Bans Unconstitutional
Sue the steel manufacturers because guns can be made from metal.
This will be an interesting case. The "express purpose" may not hold up since the filament can also be purposed for printing other objects.
A5re they going after Home Depot and Lowes for selling steel pipe too??
Yep
Can be used to make missiles
Why don’t they just ban lathes, drill presses, milling machines, hack saws, files, steel. I’m sure that duct tape should be banned too.
Why can’t lawfare be trained in the other direction? Conspiring to infringe on the 2nd Amendment rights of all citizens? Someone burn down the Giffords Center (and their ilk) with legal fees, please.
No need. In a few years there will be no industry in California.
I have a book in front of me put out by the US Army called “unconventional warfare devices and techniques” that gives you all kinds of recipes for incendiary devices, $5 at the book store
Then outlaw writing tools; pens, pencils, chalk, etc.. They can be used to write bad things, including calls to violence!
How absurd.
Saltpeter, sulphuric, and charcoal. Put Kingsford out of business!
Why don’t they just ban lathes, drill presses, milling machines, hack saws, files, steel. I’m sure that duct tape should be banned too.
Hunting/military style knives were required to have serial numbers and to be registered.
https://www.ammoland.com/2018/07/soviet-union-knife-registration/
What about suing all the drug paraphernalia MFGs? Never will see that from California......
Someone proposed a regulation requiring a mufacruring license to own or purchase machine tools a while back. Haven’t heard anything about it for a while.
*manufacturing
So, people are making gun barrels on 3D printers with plastic filament?
Somehow I don’t think so.
If it is a 3-D PRINTER would not that be protected under the 1st Amendment of FREEDOM OF THE PRESS?
Polymaker should change the label to “gun parts and personal intimacy accessories”. California would be good with that.
So I sell paper and ink to somebody who publishes pro-Antifa propaganda and now I’m supposed to be liable to a merchant whose business Antifa burns down.
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