Even for the simplest of products, production at scale can be big challenge. For example, you might find yourself spending many hours manually counting and cutting strips of component tape to go with ...

* Photo: Corbis * Getting a perfect diamond or ruby from a raw stone has always been more art than science. Each gem must be meticulously cut and polished by hand. The problem: It can take up to four ...

THE automatic fraction cutter described below is of extremely simple design and inexpensive to make, and yet works as efficiently as any commercial model. In contrast to those which have been ...