edge thickness before heat treat

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samuel082799

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Jul 29, 2015
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I want to know how thin i can grind my knife edge on a flat grind before heat treat. I hear people are doing the thickness of a dime but that seems too thick. I have also heard .020" works but that seems to thin. any input will be much appreciated.
 
samuel082799 said:
I want to know how thin i can grind my knife edge on a flat grind before heat treat. I hear people are doing the thickness of a dime but that seems too thick. I have also heard .020" works but that seems to thin. any input will be much appreciated.
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I usually go to .030-.040 depending on the design of the knife. Also, this topic has been covered many, many times and is accessible via the search function. FYI
 
The basic rule is:
Carbon steel, .030-.040" thick edge
Stainless .020-.030" thick edge

With experience, you can shave those by five to ten thousandths, but when you get thin, warp and bacon edge increase.

If the steel is thin, like .065" ( 1/16"), it is often better to grind the bevels after HT and avoid completely.
 
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