Punch (tool) - Centre

Centre

A center punch is used to mark the centre of a point. It is usually used to mark the centre of a hole when drilling holes. A drill bit has the tendency to "wander" if it does not start in a recess. A centre punch forms a large enough dimple to "guide" the tip of the drill bit. When drilling larger holes, and the web of the drill is wider than the indentation produced by a centre punch, the drilling of a pilot hole is usually needed.

An automatic centre punch operates without the need for a hammer.

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