This could be useful for you Delta owners. MAD fellows upgraded a Deltabot into cnc mill. They are milling only foam and frozen jello for testing . They wont to use this mill to create molds for metal casting.
http://madfellowstech.com/upcycled-deltabot-project-a-success/
http://madfellowstech.com/direct-to-grilled-cheese-and-jello-cnc-delta-bot-mill/
http://madfellowstech.com/upcycled-deltabot-project-a-success/
http://madfellowstech.com/direct-to-grilled-cheese-and-jello-cnc-delta-bot-mill/