Okay, I dug around a bit, and it turned out needless! My best friend and multi-time business partner happens to work at QPM Aerospace, of course around Boeing-country it's easy to find aerospace mills. They use a machine a bit different from a prototyper OR lithographer, it's a huge steel device. It is used to create airplane parts from, guess what? Autocad! That means Rhino, to me.... It's quite absurd to watch, all laser measurers and ridiculous torches and cutters... I haven't tried it on anything, but I'm getting ready to prep a few pieces and give it a whirl. Steel only...