High Speed Hole Electrical Discharge Machining is a unique way to produce precise, accurate holes in conductive materials regardless of their shape or hardness rapidly and cost effectively. This is accomplished by utilizing the process of eroding material via an electrical spark jumping across the gap between the rotating electrode and the work piece. This eroding of material is done while dielectric fluid is flushed through the hollow electrode at high-pressure to both cool the work piece and remove the eroded material. In addition to round holes, this process allows us to create diffusor shapes around the holes which improves the cooling effectiveness of turbine engine components.