William Gurstelle

William Gurstelle is the author of Absinthe and Flamethrowers, The Art of the Catapult, the bestselling Backyard Ballistics, Building Bots, Whoosh, Boom, Splat, and Notes from the Technology Underground. He is a professional engineer who has been researching and building model catapults and ballistic devices for more than 30 years. He is a contributing editor at Make magazine and writes frequently for Wired, The Rake, and several other national magazines. He can be contacted at nfttu.blogspot.com.