Contributors: ALAN and GILL BRIDGEWATER are writers, illustrators, and producers of highly successful DIY books on a range or subjects, including furniture making, woodcarving, and mechnical models. They have also contributed to a variety of DIY and craft magazines. GLYN BRIDGEWATER studied furniture design at the Royal College of Art in London. He has written for Woodworker and is coauthor of How to Make Simple Wooden Puzzles & Jigsaws and, with his brother Julian, The Boxcart Bible . JULIAN BRIDGEWATER previously worked as an electrician and plumber. An engineering graduate, he currently is the projects manager for an international marine construction company and is the coauthor of The Boxcart Bible . PAUL CLARK has been creating model rockets for over thirty years for international competitions and also commercial model rocket kits. He is the founder of the British Space Modeling Association.

IAN LAMBERT is a trained engineer with a particular enthusiasm for machines that fire and fly. He is the founder of Science Wizards, a company that performs live science experiments for entertainment and education around the U.K. MIKE RIGNALL has worked in electronic engineering for over half a century. Now retired, he continues to work in electronics as a hobby and also designs homemade cameras for Amateur Photographer magazine.