Electrochemical Machining (ECM) is a non-traditional machining method which uses electrical current and chemical reaction to remove material from a workpiece. The process utilizes an electrolyte solution and an electrical current to chemically erode material away from the workpiece. During the process, an electric current passes through the electrolyte solution and the workpiece. This causes an anodic reaction at the workpiece, resulting in the dissolution of the material and the formation of a cathode layer on the surface. The ECM process is used to produce parts with high levels of accuracy and can be used on a variety of materials, from hard metals to softer materials such as plastics.