William Gurstelle

William Gurstelle

William Gurstelle is a contributing editor of Make: magazine. His new book, Defending Your Castle: Build Catapults, Crossbows, Moats and More is now available.

Latest from William Gurstelle

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Louis Poinsot was the first to demonstrate that any number of individual forces pushing or pulling on a rigid thing can be simplified into just a single linear force and a twisting force called a couple. Build this fun set of DIY "hurricane balls" to demonstrate the physical processes at... Read more »

RemakingHistory

Re-create the incendiary reaction that welded the world’s modern railways. Read more »

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Build the simple span that launched the great age of iron bridge building. Read more »

Airic robot aarm developed by Festo AG uses air muscles controlled by tiny piezo proportional valves, 2007. —Credit: Festo AG & Co. KG

A father’s love inspired this A-bomb maker to invent a pneumatic actuator that’s used in robots today. Read more »

RemakingHistory-Rubber-1-co

Re-create the process that gave us car tires, rubber bands, and the boots on your feet Read more »

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Before homes were electrified, people lived in constant danger of clothing and surroundings catching on fire from the oil lamps and cooking fires used in daily life. As the study of chemistry became more rigorous, scientists began to think about how to protect people from this hazard. The person who... Read more »

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Use the fascinating Möbius strip to make a spill-proof coffee cup carrier. Read more »