Turbine Engine Sector (TES): Our Sterling Engineering subsidiary specializes in the machining and assembly of rotating parts for the jet engine, rotary wing aircraft, and ground power industries. Core competencies include the 5-axis milling up to 120" long, and VTL turning (up to 78” in diameter) of aluminum, steel, titanium, and exotic materials, as well as sinker EDM services. Sterling also features a state-of-the-art paint shop.