Waterjet, which uses water as a knife, is called high-pressure waterjet cutting technology. It is favored because its cold cutting will not change the physical and chemical properties of the material. Later, the technology was continuously improved, and abrasives such as garnet and emery were mixed in high-pressure water to aid cutting, which greatly improved the cutting speed and thickness of the waterjet. Waterjet has been widely used in ceramics, stone, glass, metal, composite materials and many other industries.