[labcomputer]

> Lastly, who creates the list of forbidden parts? How will it be curated? And most importantly, how will it be secured that it isn't a set of blueprints which are then used to make firearms?

My conspiracy theory is that these laws (there have been a rash of them lately, and that feels off) are being promoted by some of the cloud-based 3d printer manufacturers. In other words, an attempt at regulatory capture.

As you note, determining from gcode whether the print is a gun is effectively impossible, and hiding the blocklist is hard anyway. Thus, the only way that could possibly work technically is with those cloud printers that take a .STL as input, routed through the printer manufacturer's servers.

Discriminating between "gun" and "not gun" from the .STL is still hard, but vastly easier than inferring from gcode. The blocklist story becomes at least coherent, if still highly suspect, to anyone who knows anything about computer security.

[WillAdams]

We have a winner:

https://blog.adafruit.com/2026/02/08/any-user-who-has-a-3d-p...