For more than 40 years, Ohio Carbon Blank has been innovating and manufacturing high quality, precision graphite products. For many years, OCB provided precision ground blanks and precision graphite products specifically for the Electric Discharge Machining industry, holding tolerances as tight as ± .0002". Today, OCB is not only known for their expertise in precision graphite machining, they produce a wide variety of graphite products for a large number of growing industries. New high-speed CNC machining centers allow OCB to produce more complex products with much speed and precision. For a complete listing of our graphite materials and other machining services, feel free to contact Ohio Carbon Blank today, and let us know how we can assist you.