Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions

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With only basic household items, tools and cheap electric motors, anyone can become a mechanical genius. This book contains 15 projects to produce gadgets such as a snowball thrower, a dog feeder, a rocket-propelled toy car and some storm-predicting bells.

Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions 2006, Sterling Publishing (NY), New York, NY

ISBN-13: 9780806955155

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