A Selection of the Scientific American Book Club?Want to add more excitement to your life??This daring combination of science, history, and DIY projects will show you how. Written for smart risk taker
In this revised and expanded edition, William Gurstelle shows ordinary folks how to build a dozen fun and impressively powerful launchers with inexpensive household and hardware store materials. This
From the author of Backyard Ballistics comes a new DIY handbook on building cannons and other fun things that shoot, from whiffle ball launchers and marshmallow bazookas to super-powered water guns an
