Centre punch tip
A centre punch tip, also simply called a centre punch, is a tool used to make precise indentations on metal, wood, or other materials before drilling or machining. Centre punches are indispensable in metalworking, construction, and craftsmanship because they help position drill holes accurately and prevent the drill bit from slipping.
Types of Centre Punches
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Hand centre punches: Simple tools operated manually with a hammer, ideal for general purposes.
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Automatic centre punches: These feature a spring mechanism that releases a punch automatically when pressed, without needing a hammer—ideal for precise and repeatable marking.
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Precision punches: With a fine point, designed for highly accurate marking on delicate or small workpieces.
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Ball punches: With a rounded tip, used mainly for marking circular points or dimples.
Advantages of Centre Punches
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Precision: Allows for spot-on marking of drill holes and machining points.
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Prevents slipping: Marks help prevent the drill bit from wandering, leading to cleaner and more accurate holes.
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Ease of use: Simple to operate, requiring no special skills.
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Versatility: Suitable for various materials—metal, wood, plastic, and more.
Usage Instructions
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Mark the intended drilling or machining point with a pencil or marker.
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Position the punch tip precisely on the mark.
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For a hand punch, tap lightly with a hammer on the tool’s rear to create a dimple. With an automatic punch, press the tool until the spring triggers the mark.
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Check the depth; repeat if a deeper indentation is needed.
Care and Maintenance
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Clean the tip regularly to remove residue and debris.
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Inspect and sharpen the tip if worn.
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Store in a dry place to prevent rust.
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For automatic punches, check the spring mechanism periodically and lubricate as needed.
Summary
Centre punches are essential tools for accurate marking and positioning of drill holes and machining points. Their precision, versatility, and ease of use make them indispensable in many crafting and industrial contexts.