If you know someone who's inventing some small-sized plastic gadgets, John Warobi has the ideal Christmas gift: their very own hand-operated plastics injection molding machine! The model 20A ...

The following is an edited excerpt from The Business of Injection Molding, by Clare Goldsberry. The book is the first title in the IMM Book Club Injection Molding Management Series, published by IMM.

3D printing is all well and good for prototyping, and it can even produce useful parts. If you want real strenght in plastics, though, or to produce a LOT of parts, you probably want to step up to ...