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Metal Nail Files, Birch Bark Canoes, Cruiser Boat Hardtops, High-Voltage Circuit Breakers
How It's Made — Season 28
S28E072016-10-1321m

Metal Nail Files, Birch Bark Canoes, Cruiser Boat Hardtops, High-Voltage Circuit Breakers

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.

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S28E07 — Metal Nail Files, Birch Bark Canoes, Cruiser Boat Hardtops, High-Voltage Circuit Breakers

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