The waterjet cutting industry is divided into pure waterjet cutting and gaza waterjet cutting. Pure waterjet cutting is the use of water impact cutting materials, general cutting materials are automotive interior parts, thin cloth, sponge, aliments, paper and so on. Gaza waterjet cutting is the use of sand in the water to cut parts, the general cutting material is metal, marbre, rock plate, tile, caoutchouc, verre, composite materials and so on.
From this you can determine what type of cutting you want.