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2. Automatic center punch - Wikipedia

   en.wikipedia.org/wiki/Automatic_center_punch

   An automatic center punch is a hand tool used to produce a dimple in a workpiece (for example, a piece of metal). It performs the same function as an ordinary center punch but without the need for a hammer .

3. Punch (tool) - Wikipedia

   en.wikipedia.org/wiki/Punch_(tool)

   A center punch forms a large enough dimple to "guide" the tip of the drill. The tip of a center punch has an angle between 60 and 90 degrees. [1] When drilling larger holes, where the drill bit is wider than the indentation produced by a center punch, the drilling of a pilot hole is usually needed. An automatic center punch operates without the ...

4. Category:Metalworking hand tools - Wikipedia

   en.wikipedia.org/wiki/Category:Metalworking_hand...

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5. Marking out - Wikipedia

   en.wikipedia.org/wiki/Marking_out

   Combination square — an alternative tool for transferring angular measurements; Square — to transfer 90° angles to the workpiece; Punches — either prick or center punch to create permanent marks or dimples for drill bits to start in Automatic center punch — a spring-loaded punch that creates prick punch marks without the need for a ...

6. Category:Hand tools - Wikipedia

   en.wikipedia.org/wiki/Category:Hand_tools

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7. Center punch - Wikipedia

   en.wikipedia.org/?title=Center_punch&redirect=no

   This page was last edited on 4 February 2010, at 06:48 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.