Pop-Up Design and Paper Mechanics: How to Make Folding Paper Sculpture
Duncan Birmingham has taught paper mechanics at university level for 20 years and has an extensive library of books on pop-up. He is the author of several books on the subject and his Pop-Up! A Manual of Paper Mechanisms 9781899618095 was hailed the most comprehensive book, to date, on the subject. He lives in Bristol.    Also available:  Making Mechanical Cards 9781861086358