Edit, reading further it's even more insane:
> The New York definitions sweep in not just FDM and resin printers, but also CNC mills and “any machine capable of making three-dimensional modifications to an object from a digital design file using subtractive manufacturing.” That’s a lot of shop & manufacturing equipment!
This is the dumbest thing I have ever read.
Zip guns may get past a metal detector, but not the standard x-ray luggage scan. To the extent it'll make it past the x-ray screeners, it's because they let all kinds of stuff through, because it's a poor way to screen for dangerous things, and they are not high-skill employees, they are relatively cheap labor.
Source: I used to travel every week flying home Friday, cycle clothes out of my travel bags, and be on the road again on Sunday night. I learned to my horror I'd been flying with a pair of scissors for at least 5 weeks - during which, TSA forced me to open a Christmas present for my sister and throw away some hand lotion which was in too big of a bottle.
There's a reason they call it security theater. This is just more of it.
btw don't try that with something that is on their list like ammo, even one bullet. Your life will be ruined.
There must be a billion things in the "sterile" area of your average airport that would make better clubs than vise-grips.