Grinding stones

            The sharpness of the working tool affects the quality and speed of material processing in whatever area you work. And to maintain this tool in excellent condition, you will need a small arsenal of special devices and tools. In this article, we will consider the grain size of whetstones, directly its types and measurement systems.

            In the production of our KosiM whetstones, we use the most popular and widespread grain measuring system FEPA - the Federation of European Producers of Abrasives (European Standards), also microns, grits. The last marking of whetstones by grain size was introduced relatively recently for the convenience of our customers, because different systems have an impressive difference in the size of the abrasiveness number, for example, the Chinese 8000 is the European 1200 and, moreover, they will differ from manufacturer to manufacturer. But we will try to help you.

            If you nevertheless wondered what kind of grindstone you need, the grit table will perfectly help you with its solution.

            With its help, you will save a lot of time precisely for the selection of your arsenal of devices in our KosiM store. More precisely, if we focus on the Fepa F measurement system, the rest of the systems are given from all available sources, so that the buyer can navigate and compare the stone according to the measurement system he needs.

            It is worth noting that CBN and diamond whetstones have a micron measurement system. On stones, a wider step in the size of the grain is used and in most cases this is enough for each next stone to overlap the risk of the previous one. Diamonds and Elbor have finer grain sizes.

            For example, if a silicon carbide sharpening set can consist of 4 stones, then a set of CBN bars will consist of 6 or more.

           In addition to the above table, some other factors need to be considered, such as the type of grain, the hardness of the steel, the type of bond and the hardness of the bond. This is very difficult for beginners to take into account, so we recommend that you seek advice.

            We will help you to select the grinding stone grit directly for your tool. For the sake of convenience, you can immediately buy a ready-made set of sharpening stones for your knife.

Our product range includes a variety of sharpening stones and products

• KosiM oil and water whetstones;

• Knife sharpeners KosiM;

• Elbor bars;

• Diamond bars;

• Bars with smooth and tanned Italian leather;

• Oil for stones;

• Magnifiers;

• Protractors;

• Abrasive powder;

• Aluminum bar blanks