Manufacturer contacted and sent a new one for replacement. Great customer service but replacement item was nicked on the corner. It was still usable so i didn't bother to ask for another replacement. I would recommend item to be shipped in another box instead of an over-sized yellow envelop which is not adequate protection. Item sharpen my knife pretty good though..
Now it's time to polish. This is when you'll swap over from the coarse grit to the finer grit (make sure this side is wet, too). I found the knife still had a bit of grime on it, so I gave it a wipe clean beforehand. The motion is exactly the same as with sharpening, but you can apply slightly less pressure, and limit to roughly 30 strokes on each side.
I used this stone to add the finishing touches on my 210mm Tojiro gyuto and wow is it sharp - it slices through red onions with zero effort. While this particular stone isn't the largest, it still does the job just fine for all my cutlery. Take note of your sharpening angle; too steep and you'll end up cutting into the stone itself, which is fairly soft to begin with.
High Grit Stones: These are also known as finishing stones with the number range going up to 8000, and give you a super refined edge. They work great with Western knives as they cutting edge resembles a “U” as opposed to a “V”. If you are using your knife to cut meat, then you can happily stop at 4000 or 6000 grit. If you are only using it for vegetables or fruit go all the way to the 8000.
This is a hard review to write because while the stone is great and comes perfectly flat it's too darn small. My problem is I bought one of these over fifteen years ago and after a move it suffered two cracks across the face making it unusable. That stone is about 3" x 8 1/4" x 3/4" . This new version is about 2" x 7" x 1/2". It's practically impossible to polish a knife set from a big #7 plane let alone a #4 plane. I feel cramped even using it for chisels! The thickness doesn't really bother me even though my thicker stone cracked, with reasonable care I don't expect this one to crack. So although I love the actual stone I wish they still made my old stone. I guess I should have measured my original one and then compared the description but I assumed they would be the same. So because of that I took off one star but since there's nothing wrong with the actual stone I wanted to give it three stars based on the small size but couldn't.
MADE OF THE FINEST MATERIALS This durable knife polishing stone is a high-performing, industrial grade product designed for chefs and all of us who think we are chefs. The combination whetstone is double sided, premium quality corundum which is a rock-forming mineral derived from aluminum oxide. While most sharpening sets use bamboo or wood stands, our products comes in a slick, sturdy, aerated box with holes at the bottom so it won’t warp or crack due to moisture.
Medium Grit Stones: The number range here is from 1000 to 3000, with the latter being the basic, go-to sharpening stone. If your knives have lost their edge and need a good sharpen, then this is the grit you should start with. Don’t use it too often or the knife wears down rapidly. If you like to sharpen regularly, then the 2000 and 3000 grit are the ideal choice as they are less coarse, but please remember they are designed for sharpening and not maintaining the edge.
After several uses the Kamikoto is proving itself to be better than expected. As a professional I use different knives all the time and in fact have several thousand dollars worth of very fine blades of various manufacture. As it stands right now, if I could pick only one knife from all of them, I would take the Kamikoto. Fish, vegetables, raw meat, cooked meat, it handles them all very well and is a pleasure to use because of excellent balance and weight. And the edge… magnificent. Care and careful sharpening will be important, but then it always is with the finest of things. I would unhesitatingly recommend this product to people who appreciate the best. This is not a knife for fools or clumsy people. Buy, use, enjoy. And to the people at Kamikoto; “Thank You for making such a beautiful thing!”