A
water jet cutter, also known as a
water jet or
waterjet, is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of
water, or a mixture of water and an
abrasive substance. The term
abrasivejet refers specifically to the use of a mixture of water and abrasive to cut hard materials such as metal or
granite, while the terms
pure waterjet and
water-only cutting refer to waterjet cutting without the use of added abrasives, often used for softer materials such as wood or rubber.