Sunnen’s TC tool is custom-engineered for honing small two-stroke engine cylinders to overcome production challenges, including blind, ported, and tapered bores, and hard surface coatings, such as Nikasil and chrome plating. According to the company, the TC tool is production proven by OEMs in Sunnen and other manufacturers’ machines. It produces fractional micron (0.00004 in/0.001 mm) accuracies and specific surface finishes for increased power production, fuel efficiency, reduced emissions, and engine durability. Equipped with metal-bond superabrasives, TC tools use a customized abrasive mounting that holds up to a dozen stone segments of various lengths. Strategic placement of the abrasives produces roundness and a consistent finish from top to bottom in blind bores. Honing with the TC tool is a suitable process for small-engine OEMs trying to meet 2011 EPA standards for two-stroke engines, producing precise bore geometry and surface finish with the consistency needed for mass production.