Knife Edge Scratches

Joined
May 22, 2019
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I've read many posts here about abrasives scratching knife edges, but still don't understand if this is a bad thing that weakens the apex in actual use (not just theoretically) or is it just a superficial cosmetic problem? I like coarse, toothy, working edges, around 325 grit, and have no use for smooth, refined, polished edges. I don't care how my blades look, only how they function. I don't want to cause any apex weakness on my hard-use fixed blade knives (some used for wood chopping) if scratches weaken the edge in some way.

Besides this question, I'd like to know what grit is considered to be the lowest to leave scratches deep enough to cause a concern, if there is a concern. 120 grit? Below 120? Above?

I know I'm asking general questions here and that there are many factors involved, such as knife steel, type of abrasive, pressure used, etc., but if these questions could be answered simply in general terms, without getting into a lot of specifics and theory, I'd appreciate it.

Thanks!
 
Last edited:
Its a non issue. Intended use is the primary concern for edge finish.

In my experience a finer edge lasts a lot longer for chopping, but not due to weakening the edge
 
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