The Benefits of Waterjet Cutting Methods Since the 1950s, waterjet cutting has been around, developed as a way to cut lumber from large trees. From then, it has been improved greatly and has become an effective method for cutting any flat material including stainless steel and aluminum. In order to cut or clean materials, a waterjet uses a high pressure stream of water. The waterjet is usually connected to a high-pressure water pump which releases water from a nozzle which then cuts through the materials at high speed. Putting additives in the form of abrasives helps in the cutting process. With waterjet cutting, the working environment of the machine operator is greatly improved and thus reduces problems of exposure.