New England Water Jet Cutting The process: Waterjet cutting processes begin with a water of the highest purity that is pressurized to 55,000 psi and then released through a small..., such as metal, glass, and stone, the Abrasive Waterjet Process (AWJ) is used. AWJ is a process in which an abrasive (such as garnet) is added into the waterjet stream and accelerated... they are compatibly produced. Scroll down to read answers to common questions... What types of materials can be cut with your water jet cutting system? The waterjet can machine any...