We have created a biface whetstone that combines two different grains, 1000 and 3000, in order to maintain the blade in perfect condition. By using first the rougher grain (1000) then the finer grain (3000) to sharpen your knife, you will preserve its fine cutting edge. The whetstone 3000 is made by joining a high-quality natural stone to an artificial stone using a special process that dispenses with binding agents. The result is a whetstone that allows you to maintain your blade with ease and precision. It is the ideal companion of Michel Bras knives.
Sharpening a knife involves quite literally cutting its surface by means of grains aligned on the whetstone's surface. Today the two kinds of materials used —artificial and natural stone— each have their advantages and disadvantages.
In the most common kinds of artificial stone available today the grains are bound by means of "glue." This artificial binding process has the advantage of distributing the grains evenly over the surface. However, because the "glue" tends to melt and run when the blade is being sharpened, there is a "slipping effect," i.e. the blade heats up and slides over the surface. As a result it may lose some of its rigidity.
Natural stones hewn from rock do not heat up or cause the blade to slide. But the grains of such stones lack homogeneity in size and distribution and thus do not sharpen evenly.
The 3000 whetstone was created to combine the advantages of both kinds of stone. No binding agent was used in its fabrication. A novel technique using thermal energy makes it possible to distribute grains evenly over its surface so that there is no risk of slippage or heating up when you sharpen your knives. As a result they will keep their fine cutting edge for a lifetime.