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S28:E7 Metal Nail Files, Birch Bark Canoes, Cruiser Boat Hardtops, High-Voltage Circuit Breakers
First Aired: October 13, 2016
Runtime: 21 min
Steel blanks are cut, textured, hardened and finished to produce durable metal nail files. Sheets of birch bark are fitted around a wooden framework and reinforced with ribs to create traditional canoes; composite materials are moulded and finished into hardtops for cruiser boats; and insulated contacts and interruption mechanisms are assembled into high-voltage circuit breakers.
