The Punch's cutting edge is shaped on a grinder using a drill (the preferred way), or on a metal lathe.

Center Punch

Used to mark the position for drilling,
helping to prevent the drill bit drifting.

Prick Punch

Used to mark positions by hand for work.
Generally a hammer is not used, or only lightly used.

General Guidelines
Punch Type Comments
Center 90°
Prick 60° I have seen recommendations for angles as low as 30°, but that makes for a point that will be easily dulled when using with metal. Would work well if using this with wood though.

Notes & Comments

Information regarding Grindstones

If grinding this on a high speed grinder, be sure to manage the temperature so that the temper is not lost due to overheating. If there is a carbide insert, DO NOT cool by dipping in water. This will cause the carbide to crack due to shocks. Otherwise, cool by dipping as needed in water.

More Information

Books & Papers

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About this site
Remember : The goal of sharpening is to produce sharp tools, and these tools can injure you if mishandled. Safety measures should be followed to protect yourself and those in your shop. Be sure to read and follow all instructions from the manufacturer, and and utilize proper safety equipment. Never consume alcohol or anything that could impair your judgement before sharpening tools, or using sharp tools. Comments can be sent via eMail to me at SharpeningHandbook@Gmail.com.