There's a bill moving through Sacramento right now that should concern every Californian who cares about privacy, property rights, and not having the government watch you make stuff in your garage.

Assembly Bill 2047 would require every 3D printer sold in California to include "firearm blocking technology" — software that scans your designs in real time to prevent anyone from printing gun parts. On the surface, it sounds like a reasonable safety measure. In practice, it's a privacy nightmare wrapped in good intentions.

Here's the problem: for a printer to block a specific shape, it has to know what you're printing at all times. Every design, every project, every prototype — monitored, analyzed, and cross-referenced against a government-approved blacklist. Your desktop mini-factory becomes a surveillance device. And because many flagged components are basic geometric shapes — cylinders, springs, tubes — the system would be perpetually second-guessing whether your custom shelf bracket is actually a trigger housing.

It gets worse. To enforce this, manufacturers would have to lock down their machines with proprietary, state-approved firmware. That kills the open-source ecosystem that made 3D printing affordable and accessible in the first place. You'd technically own the hardware but need Sacramento's permission to use it. If that sounds like the John Deere tractor repair debacle, you're paying attention.

And let's be honest about the economics: California is one of the largest consumer markets on Earth. If manufacturers have to build neutered printers for this state, they're not going to maintain two separate product lines. This becomes the national standard by default — a California regulation imposed on everyone from Texas to Tennessee without a single vote.

As one local tech enthusiast put it, "This is like requiring every kitchen knife to have AI that checks if you're about to commit a crime before it lets you cut a tomato."

3D printing represents something genuinely revolutionary — the democratization of manufacturing. Anyone with a few hundred dollars can prototype inventions, make prosthetic limbs, repair broken appliances, or build custom tools. AB 2047 doesn't just target ghost guns. It establishes the principle that the state can embed itself inside your personal tools and watch what you create.

If you care about that precedent — and you should — now's the time to contact your state representatives and tell them to oppose AB 2047.