Muscle Wires Project Book (3-141): A Hands on Guide to Amazing Robotic Muscles That Shorten When Electrically Powered (Sample Kit, 3 Sizes of Wire - 1 Meter Total) [Paperback] Gilbertson, Roger G.Presenting everything you need to successfully design, build, and operate devices with Muscle Wires Presenting everything you need to successfully design, build, and operate devices with Muscle Wires amazing nickel titanium filaments that actually contract when electrically powered and lift thousands of times their own weight. Topics include: Basic lever action, ratchets and latches, model railroad crossing, AC power circuit, solar power circuit,