Centre Punch: Difference between revisions
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[https://en.wikipedia.org/wiki/Punch_(tool)#Centre '''Centre Punches'''] are ground to a strong point with an included angle of 90 degrees ''(in a similar manner to a '''[[Pens, Pencils and Scribers|Scriber]]''')''. | [https://en.wikipedia.org/wiki/Punch_(tool)#Centre '''Centre Punches'''] are ground to a strong point with an included angle of 90 degrees ''(in a similar manner to a '''[[Pens, Pencils and Scribers|Scriber]]''')''. | ||
=====Uses===== | =====Features and Uses===== | ||
To stop a drill bit skidding about a metal surface, these are used to make a small indentation to locate the drill centre. | To stop a drill bit skidding about a metal surface, these are used to make a small indentation to locate the drill centre. | ||
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Revision as of 14:00, 14 May 2016
Description
Centre Punches are ground to a strong point with an included angle of 90 degrees (in a similar manner to a Scriber).
Features and Uses
To stop a drill bit skidding about a metal surface, these are used to make a small indentation to locate the drill centre.
Note: Hold the punch to an angle to position on centre then raise to the vertical and strike it sharply with a hammer - but only once - striking several times may cause the punch to bounce around.
DT Online Buyers' Guide
- All punches shown have a good knurled grip.
- Those with a square head are less likely to roll off the bench.
 
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| Stanley Centre Punch 0 58 120
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Draper 84456 4mmx100mm Centre Punch
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Starrett 117D Centre Punch with Round Shank
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Spear & Jackson 4mm x 100mm (4inch) Centre Punch
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