What about a plasma cutter? Cheaper and can cut more range of metals - e g http://www.r-techwelding.co.uk/r-tech-cnc-plasma-cutting-machine-system-4ft-x-4ft/?utm_source=google_shopping&gclid=Cj0KCQjw9afOBRDWARIsAJW4nvw3rcF3X6Oip8uEPBchZHqIuToiQkDlMJWEy7XmjOvWPb9oBWUjM4AaAp2mEALw_wcB