Serrated blade

The type of blade used on a saw and on some knives or scissors. Also known as a dentated or toothed blade

Related Topics:
Saw - Knives - Scissors

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A serrated blade has a cutting edge that with many small points of contact with the material being cut. By having less contact area than a smooth blade, the applied force at each point of contact is relatively greater and the points of contact are at a sharper angle to the material being cut. This causes a cutting action that involves many small splits in the surface of the material being cut, which cumulatively serve to cut the material along the line of the blade.

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Cuts made with a serrated blade are typically less smooth and precise than cuts made with a smooth blade. Serrated blades are also more difficult to sharpen using a whetstone or rotary shapener than a smooth blade.

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