The overall cubic boron nitride tool changes the traditional manufacturing process of the slurry pump industry. The overall sintered CBN blade is used to process the slurry pump sheath without being affected by slag and trachoma. And for the slurry pump impeller processing, capable of high-speed intermittent cutting. After the surface of the workpiece with a coating tool or ceramic cutting tool, the surface of the hot, and the use of the overall sintering cubic boron nitride tool processing, the feel is warm, because the processing of the chip can be a good discharge will cut the heat away.