Our vendors use vinyl die cutters that run on proprietary software vector files.
We export our art as .ai files and they convert it.
Many years ago I was permanently 86'ed from the Computer Center at Poly. I was building a model of a building that had a large quantity of perforated sun shades, so I wrote a program that punched every hole in a deck of IBM cards.
When I ran it through it jammmed the machine, caused a big ruckus and got me tossed.