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

Illustration by Peter Strain

Here's an easy loudspeaker project. Build the moving-coil, direct-radiation transducer that has rocked our world for 90 years. Read more »

RemakingHistorySteps-complete-angle-measurer3

Build the simple surveyor’s instrument that made the first accurate maps on Earth. Read more »

image thingy

While looking for a way to strengthen cannon barrels, Bessemer discovered better ways of making steel. Read more »

steal rubber band shooter featured image

Learn how to heat-treat and toughen the metal that built our world: carbon steel. Read more »

double-sphere-diagram

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 »