“For round tools”
“A proprietary coating process can deposit controlled thicknesses of diamond on round tools, curved and irregular surfaces, and cutting inserts.
“A US patent is pending on the process, which uses lasers and proprietary technology to produce diamond coatings up to 1 mm thick on carbide, ceramic, cast iron, steel, and other substrates. The ability to selectively coat round and irregular surfaces is unique among diamond coating processes…”