So so
I have a lot of hope, this product would be a wonderfull, but, isn't.

definitively I prefer the sharpening steel, i have better results.

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Quick Way to Sharpen Knives!
Practice, practice, practice and still I am not good at sharpening knives with the sharpening steel that came with my first Wusthof knife set. I have almost mastered the technique but I still cannot get the knives as sharp as I want. Enter the Wusthof Ceramic Knife Sharpener, with its idiot proof method for keeping knives very sharp. Five or six quick strokes in this device and a very sharp edge is returned to my knives.

Note that I said "keeping" knives sharp. The knives must be relatively sharp to begin with. This sharpener does not sharpen dull knives...it only maintains the sharpness of sharp knives. For very dull or dull knives you need to use an electric sharpener like the one of the Chef's Choice models.

However, if you are like me and have not mastered the traditional sharpening steel this is the easiest way to maintain sharp knives of all manufacturers.