The Scraper's edge is shaped on a belt sander (preferred) or bench grinder.


Side View
General Guidelines
Edge Angle Value Comments


Primary Bevel

40° - 75°

Increase this angle when the tool is being used for scraping harder items (e.g., a gasket scraper).

This edge should be thin, and I recommend it be no larger than 1/8" (3mm). If it is, re-grind the secondary bevel as necessary to reduce its size.

Be sure to de-burr this edge after sharpening. Breaking off the burr through use will cause the edge to be jagged.


Secondary Bevel

~ 30°

It is recommended to keep what came on the tool from the manufacturer. An estimate is given here in case the tool needs to be re-ground, as will happen when the primary bevel becomes too large.

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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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