The cutter is commonly connected to a high-pressure water pump (a local water main does not supply sufficient pressure) where the water is then ejected from the nozzle, cutting through the material by spraying it with the jet of high-speed water. Additives in the form of suspended grit or other abrasives, such as garnet and aluminum oxide, can assist in this process. Because the nature of the cutting stream can be easily modified, water jets can be used to cut diverse materials, from prepared foods to metals. There are few materials that cannot be effectively cut with a water jet cutter; one of these is tempered glass, which shatters when cut, regardless of the cutting technology used. Certain ceramics are also resistant to water jet cutting. Water jet cuts are not typically limited by the thickness of the material, and are capable of cutting materials over twelve inches (30 cm) thick. The penetrating power of these tools has led to the exploration of their use as anti-tank weapons, however, due to their short range and the advent of composite armor, research was discontinued.
Water jet cutters are also capable of producing rather intricate cuts in material. The kerf, or width, of the cut can be changed by changing parts in the nozzle, as well as the type and size of abrasive. Typical abrasive cuts are made with a kerf in the range of 0.04" to 0.05" (1.016 to 1.27 mm), but can be as narrow as 0.02" (0.508 mm). Non-abrasive cuts are normally 0.007" to 0.013" (0.178 to 0.33 mm), but can be as small as 0.003" (0.076 mm), which is approximately the size of a human hair. These small cutters can make very small detail possible in a wide range of applications.
The cutter is commonly connected to a high-pressure water pump (a local water main does not supply sufficient pressure) where the water is then ejected from the nozzle, cutting through the material by spraying it with the jet of high-speed water. Additives in the form of suspended grit or other abrasives, such as garnet and aluminum oxide, can assist in this process. Because the nature of the cutting stream can be easily modified, water jets can be used to cut diverse materials, from prepared foods to metals. There are few materials that cannot be effectively cut with a water jet cutter; one of these is tempered glass, which shatters when cut, regardless of the cutting technology used. Certain ceramics are also resistant to water jet cutting. Water jet cuts are not typically limited by the thickness of the material, and are capable of cutting materials over twelve inches (30 cm) thick. The penetrating power of these tools has led to the exploration of their use as anti-tank weapons, however, due to their short range and the advent of composite armor, research was discontinued.
Water jet cutters are also capable of producing rather intricate cuts in material. The kerf, or width, of the cut can be changed by changing parts in the nozzle, as well as the type and size of abrasive. Typical abrasive cuts are made with a kerf in the range of 0.04" to 0.05" (1.016 to 1.27 mm), but can be as narrow as 0.02" (0.508 mm). Non-abrasive cuts are normally 0.007" to 0.013" (0.178 to 0.33 mm), but can be as small as 0.003" (0.076 mm), which is approximately the size of a human hair. These small cutters can make very small detail possible in a wide range of applications.
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