Homepage - Sirois Tool Co. At Sirois Tool, we offer a wide range of build capabilities, whether you need standard parts or customized engineering. Our capabilities include milling, grinding, WEDM, EDM, CNC, turning, and honing. At Sirois Tool, we offer a wide range of build capabilities, whether you need standard parts or customized engineering. Our capabilities include milling, grinding, WEDM, EDM, CNC, turning, and honing.