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angle of pric punch


Types and Angle of Punch

Punches are two types centre punch & prick punch.
The angle of prick punch is 30 ° or 60°.
The 30° prick punch is used for marking sharp impression on metal. 
The 60° punch is used for marking witness mark. So 60° prick punch is called as Dot punch.
Centre Punch marks of angle  90°.

Prick Punch  : 30°(Sharp impression) 
Dot Punch     : 60°( witness mark) 
Centre Punch: 90°(marking 90° angle)

The witness mark should not be too close to one another.  The distance of   one dot mark to another dot is 6 mm.

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