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S21:E11 Cast Iron Stoves, Ultralight Aircraft, Snow Groomers, Rubber Bands
First Aired: June 13, 2013
Runtime: 21 min
Molten iron is poured into moulds, cleaned and finished before the heavy castings are assembled into wood-burning stoves. Lightweight structural components are joined into ultralight aircraft; tracked chassis, hydraulic systems and grooming equipment are combined into machines that maintain snow-covered trails; and cured rubber tubes are sliced into individual rubber bands.
