"Whoa, that shot a lot farther than I thought it would!"Shooting far, flying high, and delivering way more exciting results than expected are the goals of the gadgets in this book.Discover unexpected ways to turn common materials into crafty contraptions that range from surprisingly simple to curiously complex. In vivid color photos, you'll be guided to create slingshot rockets, unique catapults, and even hydraulic-powered machines. Whether you build one or all 19 of these designs, you'll feel like an ingenious engineer when you're through.Best of all, you don't need to be an experienced tinkerer to make any of the projects within. All you need are household tools and materials, such as paper clips, pencils, paint stirrers, and ice pop sticks.Oh, and rubber bands. Lots of rubber bands.So grab your glue gun, pull out your pliers, track down your tape, and get started on the challenging, fun, and rewarding journey toward becoming a rubber band engineer.