Here’s a simple, but powerful, coil gun made from the flash circuit of a disposable camera, a large cap, a coil of magnet wire and an ink pen shaft (and a few other parts). I like the use a light switch box as the project box.
Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy person’s memoir,” called Borg Like Me.