William Gurstelle is the author of Defending Your Castle, Absinthe & Flamethrowers, The Art of the Catapult, Backyard Ballistics, Building Bots, Notes from the Technology Underground, and Whoosh, Boom, Splat. He is a professional engineer who has been researching and building model catapults and ballistic devices for more than 30 years and is a contributing editor at Popular Mechanics, a columnist for Make magazine, and writes frequently for the Atlantic, Maxim, and Wired as well as other national magazines. He lives in Minneapolis, Minnesota.
William Gurstelle is the author of Defending Your Castle, Absinthe & Flamethrowers, The Art of the Catapult, Backyard Ballistics, Building Bots, Notes from the Technology Underground, and Whoosh, Boom, Splat. He is a professional engineer who has been researching and building model catapults and ...