I've designed a game which requires 3D geometric pieces. For a prototype, I'd like to see these make from metal, and to look elegant. Who might craft such items? I'm not even sure which profession I might investigate.
A 3D printing service would be an ideal solution.
I have no experience with any of the online services available, but as an example Shapeways seems to offer the option to print in a variety of plastic and metal materials, including the most common metals such as Steel, Silver, Aluminum, Gold, Platinum, Brass, Bronze, etc.