zlacker

>>ptorro+(OP)
> The obvious problem: you cannot reliably detect firearms from geometry alone.

The obvious problem with this argument is that in just the medium term, world-model style AI will get good at this task, but having big brother pre-approve every print will still be bad.

>>delich+ce
How? The printer only ever retrieves G code for individual parts without any knowledge of what they are going to be assembled into. There is no viable way to solve this classification problem on this kind of incomplete data, is there?

>>gmueck+VV1
It’s not nearly that hard of a problem. There are n gun files on internet, so validate the hash of those n files (g code whatever). These people aren’t cadding their own designs.

>>le-mar+KX1
In 3D modeling, there are parametric files where the end user is expected to modify the input parameters to fit their needs. So for example, if you have multiple parts that need to fit together, you may need to adjust the tolerances for that fit, because the physical shape will vary depending on your printer settings and material.

Making tiny modifications isn't just a method of circumvention, it's like part of the main workflow of using a 3d model.