Natural stone: such as natural sandstone, natural quartz sand, etc. These natural stones have high hardness, good wear resistance and uniform particle size, and are suitable for grinding high-hardness tools. However, natural stone is expensive and needs to be cleaned and maintained frequently.
Synthetic stone: such as alumina and silicon carbide. These synthetic materials are uniform in particle size, good in grinding effect, not easy to break and long in service life. However, the grinding effect of synthetic stone is slightly inferior to that of natural stone.
Steel magic stone: Steel magic stone has become the choice of many chefs and grinding professionals because of its high hardness and long service life. But relatively speaking, the technical requirements of using steel magic stone are high and difficult to master.
On the whole, the choice of the material of the philosopher's stone should be based on your own needs and actual situation. If you need to grind tools with high hardness, you can choose natural stone; If you need good grinding effect and long service life, you can choose artificial stone; If you need a magic stone that is not easy to damage for a long time, you can choose a steel magic stone.