The earliest form of automatic washing was the nautical practice of towing clothes behind the ship. The combination of agitation and a constant flow of clean water washes the clothes quite effectively. Episode Contents: Models: Solenoid valves and pressure switches explained. Various cut away washing machines and their ingredients: weighted base, heating element, pumps, timer. Machines: A thunder simulator by Tim. A stunt by Rex using a solenoid cannon to roll a car. One of the best of Tim's collecting boxes, the Chiropodist who nods, twiddles her thumbs and then dissapears and tickles your foot (automatic british mickey taking at it's best). Guests: Again, lots of antique specimins (including the canadian shocker!). Industrial washing machines and the way they deal with the eccentricities of a load of water. Extro: A mountain of washing machines.