In most cases a sharpening stone will be a combination of sharpening grains and a binding agent. However, in case of a Ardennes Coticule it is a completely natural product. The grains have cutting edges which enables them to sharpen your knife. As soon as a sharpening stone is used little pieces of the grains break off, revealing a new cut ing edge. The higher the number, the finer the grain. Stones with coarse grains (up to grain 400) can be used to shape the blade of a blunt knife. You can subsequently take care of the fine finish with a stone with a smaller grain.
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!”
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.
Modern synthetic stones are generally of equal quality to natural stones, and are often considered superior in sharpening performance due to consistency of particle size and control over the properties of the stones. For example, the proportional content of abrasive particles as opposed to base or "binder" materials can be controlled to make the stone cut faster or slower, as desired. Natural stones are often prized for their natural beauty as stones and their rarity, adding value as collectors' items. Furthermore, each natural stone is different, and there are rare natural stones that contain abrasive particles in grit sizes finer than are currently available in artificial stones.
This coarse grit whetstone is great for prepping old and dull knives that need to be sharpened with a fine grit stone. One of my good knives edge looked like someone had tried to chop barbed wire. After ten minutes on each side of the stone, the edge was smooth and free of imperfections. After it hit the knife with the fine grit stone, I was cutting onions and apples like hot butter! I would soak this stone for 12-24 hours before using. It sucks water like a sponge. The surface needs to be damp when you sharpen.
4. Start sharpening the first side of the blade. With your blade set at the prefect angle, you’re ready to start sharpening. Imagine you’re carving off a slim piece of the stone’s surface. Personally, I bring the blade into the stone. Other people stroke the blade away from the stone. Both ways work, so just use whatever technique you prefer. If the knife blade is curved or if it’s longer than the stone, you’ll need to sweep the blade sideways as you work, so the entire edge is sharpened evenly. Apply moderate pressure as you sharpen. No need to bear down hard on the blade. After you make one stroke, start back at the beginning and repeat. Do this about 6-12 times.
Once you've sharpened one side, you need to flip over, but don't swap the hand gripping the blade – think of it a bit like going backhand with a tennis racket (see above). Lead with the heel this time, rather then with the blade, but repeat the process in three parts. After five strokes on each third of the blade, it's time to check your knife. It's not an exact science, and it all depends on how blunt your blade was to start with (mine was very blunt indeed). But if you sharpen fairly regularly, it should just take a few strokes.
I was delighted to discover, on opening my recently purchased Kanpeki knife set, single-edged blades. I had never used single-edged blades in the kitchen. I was pleasantly surprised to find each knife was so versatile. Able to do the most delicate cutting, to the workhorse of basic slicing and dicing. I am pleased to say, I will be purchasing the remaining knives and whetstone.