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William Gurstelle
Joined: May 22, 2014
William Gurstelle 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 for the Atlantic, Maxim, and Wired. He lives in Minneapolis, Minnesota. Find out more at williamgurstelle.com.
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