What is a water jet? - A water jet cutter, also called a water jet, is an industrial cutting device used for the fabrication of flat-cut parts. Using a nozzle to focus water into a high-pressure stream, a waterjet can be used to cut semi-soft materials like rubber, foam, or wood. Abrasive granular substances can be added to the jet in order to cut harder materials like aluminum and all types metal. Warrenton Steel has the largest water jet in the St Louis and surrounding counties available for you. Just gives us a call at 636-456-8400 and let talk. warrentonsteel.com