Ryan Gray is Co-Founder and CEO of SGW Designworks, a product engineering and design firm featured in The Lean Startup. It’s very common for a prospective client to come to our product development ...

Rapid prototyping can be defined as a variety of techniques employed to quickly manufacture a scale model of a physical assembly or product. Usually three dimensional computer aided design, or CAD, is ...

Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.