Mrs Gizmo has invented a teleporter, but the Gizmos inadvertently travel back to the time of the dinosaurs. Mr Gizmo's picnic is ruined when a Tyrannosaurus Rex

Step-by-step instructions to building more than 30 fascinating devices are included in this book for workbench warriors and grown-up geeks. Detailed illustratio

What student—or teacher—can resist the chance to experiment with Rocket Launchers, Drinking Birds, Dropper Poppers, Boomwhackers, Flying Pigs, and more? The

Make wildly inspired mechanical marvels from wood, with 15 step-by-step projects and full-sized scroll saw patterns attached to the book in a handy pouch. Scrol