RAM/SINK/PLUNGE EDM

Sink EDM, Ram EDM, and Plunge EDM are one and the same. This EDM process uses custom machined electrodes (typically made from copper, graphite, or tungsten) which creates a spark between the material being machined and the electrode. The spark erodes materials in the EDM tools pathway, creating the complex cavities or shapes desired. Ward Precision specializes in Electrical Discharge Machining work, offering Ram/Sink/Plunge EDM services capable of producing fine detail/surface finish work, precision gears, and intricate cavities/shapes.

Blind Cavities. Intricate Details. Sharp Corners. Fine Surface Finishes. Thin Walls. Machining threads into hardened parts. Blind Keyways. Internal Splines, Squares, and Hexes. Tolerances can be held to .0001”.

Sinker EDM and Wire EDM both produce a spark using an electrode to cut or erode the material being machined. In both processes, the spark created by the electrode never comes into physical contact with the machined part, maintaining the integrity of the material being cut and resulting in a burr-free finish.

The difference between Sinker EDM and Wire EDM lies greatly in the type of electrode used in each process, the fact that no pre-drilled hole is required with Sinker EDM, as well as the 3D capacities the Sinker EDM is capable of achieving (Wire EDM only has the capabilities to produce 2D parts). Sinker EDM can produce parts that Wire EDM cannot – components that do not need to be cut all the way through.