Welcome to Machine Tool Diagnostics, Inc. (MTD). MTD is first and foremost a CNC / Machine Tool Service Organization. For the first 4 years of our existence, “service” was a very literal term; for us it meant diagnosing and repairing a machine tool in a non-operative state. Our customers groomed us with their confidence in our ability to repair even the most difficult machine tool issues. Now we have evolved into a complete machine tool organization.