This stone was recommended to me by one of our natural stone suppliers. Everyone always says the most important thing when buying natural stones is to buy from someone that you trust, and we trust this guy completely. I’ve noticed that many of the natural stones being sold to consumers in the US today are geared towards wood working tools and razors. The stones are super hard and extremely high grit. These stones are geared towards kitchen knives… that’s right, specifically for kitchen knives. They are a bit softer than stones that are used for razors or tools. They also leave a very nice toothy edge, which is exactly what you want when cutting food. Edges that have been overly polished tend to leave edges that are slippery feeling when cutting. There is a specific buzz word for this among chefs in Japan- they say the blade is “running”.
I’ve been using one of these stones for a while now and I love the way it works on my knives. It is very user friendly, cuts relatively fast, leaves a nice finish (and good contrast on many clad knives), and works well on many types of steels (I’ve tested on white #1 and #2, blue #1 and #2, blue super, AEB-L, 19c27, and many others). Also, the stones can work up a lot of mud, which can be helpful in achieving a more fine and even finish.
The sides of this stone are lacquered to add protection and stability to the stone. We’ve also had out supplier mount these on bases for added stability and protection over time.
Natural stones from this region are rich in silica, which acts as a main abrasive. This regions' natural stones all have about the same fineness of girt to being with (around 6-8k) and the potential finish can go up from there, depending on the stone hardness, the pressure you use during sharpening, water, etc.
This stone should be used like a splash and go stone... add just enough water to lubricate the surface, but not too much. The goal is to develop mud, so keeping the surface very wet is prohibitive to mud development.