I had been chatting about the idea of making a small smart switch for USB devices and stumbled across this article which turned out to be a great read. A lot of the manufacturing process is similar to what I am used to with exception of the actual electronics. If you're at all interested in product manufacturing or the idea of selling an electronic invention this is a light introduction but covers the whole scope of that kind of endeavor:
www.ponoko.com
Case Study: Estimating Manufacturing Costs For A Bluetooth Device
When you have a new product that you want to develop, the first thing you should do is look at the big picture
www.ponoko.com