The main difference between this method and the rest is that in the process of cutting, neither ceramic nor metal cutting elements are used. In addition, they do not use electricity or arc. There is no need for any gas or other cutters. The metal cutting process is performed using water and abrasive. Some people are in a observation of this method. But this is actually so. These two elements are mixed and under pressure, a stream is supplied to the metal. Hydroabrasive metal cutting leaves on the material an even smooth seam.