I assume he's the same guy that occasionally shows up at Shaker Square:
I've never used his services, but he's a knife sharpening rock star. By which I mean that he gives classes, sells books and is the most well know knife sharpener in the area.
I sent a message to a knife sharpener I know in Cleveland Heights....I do not think she is a Chow.com user yet....but I forwarded her this thread. I am sure she will be with you soon.
I am in Detroit so I am not sure of the name of her business off the top of my head.