A Diafold sharpening stone has the design of a butterfly knife with which the handle is folded around the diamond sharpening stone. This way the stones are optimally protected. The stones can be used on two sides and each side has its own grain size. The colour in the well-known DMT-circled pattern shows which grain size it concerns.
Information about grain size DMT sharpening stones
The grain size of a diamond stone and a water stone cannot be plainly compared. This is due to the fact that the construction and materials used are essentially different. In case of a water stone the sharpening grains are incorporated into the stone. These grains will be loosened from the stone during the sharpening process in the form of a kind of sharpening paste that arises. In case of a diamond stone, the diamonds are tightened into the surface of the stone.
Important to know
You may choose for dry or wet sharpening with the sharpening stones by DMT. The advantage of wet sharpening is that the stone is lubricated and sharpening residues are disposed of. Only use water and never oil if you want to sharpen wet. In addition it is good to know that a diamond sharpening stone has to be used a couple of times in order to obtain the optimum sharpening result. The operation of a new sharpening stone is a little too coarse. Only after 5 to 10 knives the stone will obtain its definitive working.