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The Swiss Army knife
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is one of the world's best-known tools,
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and 10 million of them are manufactured every year.
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But how does one factory produce 45,000 each day,
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and in such a precise manner?
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The Swiss Army knife has been around for nearly 130 years.
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It was first delivered to the Swiss Army by Karl Elsner in 1891.
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The knives are now produced by Victorinox,
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Europe's largest knife manufacturer.
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The main factory in Ibach, Switzerland,
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produces a variety of knives
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designed to offer versatility and compactness.
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Here, it takes around five minutes
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to produce a pocket knife, depending on the model.
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There are 400 different models.
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2,400 metric tons of steel
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are imported to the factory each year.
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From these rolls, knife blades
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are stamped to 2 millimeters thick.
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This requires 50 metric tons of pressure.
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Each roll can make 16,000 blades.
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Various tools require various alloys for hardness.
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The basis of the knife is 85% iron,
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along with 13% chromium and a small trace of other metals.
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Narrator: Blades are made from hard steel,
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whereas screwdrivers are formed from softer steel.
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The blades are rounded off using
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triangular-shaped plastic wheels and water.
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The knife blades are then extracted via a magnet
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and grinded down again to achieve an exact width.
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Each blade must measure 2-millimeter thickness.
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They are imprinted with a company stamp,
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then placed in an oven at 1,050 degrees Celsius.
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The blades are then sharpened
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and checked again for thickness.
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The signature red outer casing
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is formed via injection molding.
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Other tools for the knives are produced on nearby machines
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via a process of milling and grinding.
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A small metal cross emblem,
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the Victorinox Cross & Shield,
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is inspected via a microscope
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to ensure standard thickness.
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This was added the first time in 1909
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and later to all Victorinox knives since 2006.
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The classic officer's knife
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is assembled by machine at the factory.
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Other editions are assembled by hand.
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Each component part of the knife is checked
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and polished by hand before it can go on sale.
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The knives are exported from the Ibach factory
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to over 120 countries.
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And, of course, the pocketknife
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designs have changed over the years.
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Victorinox keeps adding new features,
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such as USB storage and laser pointers.