In operation the waterjet will undercut corners and swing wide on curves when moved as one would move a traditional rigid cutting tool. Traditionally hydraulic intensifier pumps are less efficient compared to the direct drive pump which allows more net power to the cutting nozzle, resulting in a faster cut. The engine of the Waterjet is a direct-drive pump. In addition if material is not flat or stressed to be flat there could be adverse interference with the nozzle during pathing, resulting in down time. The vibration from the cutting power can cause materials to shift if they are not set up properly. Setting up for waterjet cutting is a skill that requires experience and solid documentation. In an industrial setting a mix of abrasive is added to the nozzle to make the process abrasive waterjet cutting, thus allowing for cutting on foams, plastics, rubbers, and steel alloys. Waterjet cutting utilizes a high pressure stream of water to cut by erosion a narrow line in stock material.
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