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Because Chess is a 'sticky' substance. It 'sticks' to a knife blade as it's cut. The wire has a much smaller surface area to that of a knife - and therefore the cheese doesn't stick as much. Additionally, cheese-wire is usually elastic. When you cut the cheese, you stretch the wire slightly. The wire always attempts to return to its original length - this provides extra cutting force as the wire moves through the cheese.

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13y ago

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