I bought the stone to sharpen my old knife, because I did not want to throw away all at once ... After I've watched some instructions on Youtube, I started with the cheapest knife and just tried this. Since you should water the stone, you have to him logically after grinding again let it dry. When the stone is also no problem. Although this bamboo holder looks chic but does so so long to dry, that it is provided in the drawer moldy me out. And, although it was several days to dry out. Possibly would be more appropriate here another material.