3D Printing: Is This A Real Manufacturing Revolution?

As a patterning guy I have been watching the 3D printing story with real interest. Can it deliver or its it hype ? I think that it's an intriguing way to build prototypes and unique parts, but I'm unconvinced that it has any volume manufacturing role. In particular, I have a hard time seeing a business where you can make large numbers of copies of the same manufacturing tool – a key to a “h... » read more