When I was managing the Sculpture Studio at a Phoenix fine art supplier, I came up with a couple of interesting pieces that used scrap off-fall from our plasma table. They got so much interest that the owners wanted us to start making production pieces exactly the same as the one-offs. I tried to explain the point was to use scraps to make artwork, but I ended up having to figure out what pieces those cutouts came from and programming what had been scrap to cut for the new pieces. That not only negated the point of using scrap (instead of giving it away to our scrap metal guy), but also created a programming and fabrication nightmare. I have to say, though, that I admire the nesting ability of the worker in that video! They were doing nearly as well as I could with computer assistance.