waterjet
Waterjet designs are created by a waterjet cutter – a tool capable of slicing into marble and granite using a jet of water at high velocity and pressure, or a mixture of water and an abrasive substance could be used for operations such as cutting, shaping, carving and reaming.
EMG employ the waterjet method where possible as it has the ability to cut without interfering with the material’s inherent structure as there is no “heat-affected zone” meaning metals can be cut without harming or changing their intrinsic properties.