X-Carve: Can it cut Jewlery sheet metal

I’m researching whether X-Carve would be suitable for carving out fine detail pieces from sterling silver, gold or copper sheets for Jewelry. Typically the sheets I work with are dead soft and can range from 30 gauge to 14 gauge.

With CNC Routers is it the bit that makes it possible to work with metal or is it the router or is it the motors of the x-y-z axis drives?