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The Kosher Spirit - Kislev 5771/Winter 2011 - Consumer Questions

Dear OK,

I remember as a child when the Jewish knife sharpener would come door to door to sharpen knives around the neighborhood. Now, my only option is to send my knives to a professional sharpening service. Is it permissible to get a knife sharpened by a professional knife-sharpener who also sharpens non-kosher knives?


Rabbi Hanoka responds:

It is permissible to get a kosher knife sharpened by a professional knife-sharpener, even if he also sharpens non-kosher knives. Even though the friction from sharpening causes a lot of heat buildup, the heat is meant to take away something from the knife in order to make it sharper, so it does not pose a kashrus problem.

Please note, an identifying sign is recommended to insure that your knife is returned to you.

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