Rotary Technologies Corporation brings today's most advanced milling cutters to the world's metal cutting industry.
Choose the high performance, low cost Metal Master using our exclusive "frustum inserts", or the Rotary Milling Cutter with the insert that "rotates as it cuts!" Both cutters feature "roll shearing" during the cut to provide faster cutting speeds, smoother surface finishes, longer insert life, and lower costs.
Why Compacted Graphite Iron? In 1949, a now well-known material called ductile iron was patented. At the same time, a lesser-known material called Compacted Graphite Iron (CGI) was also patented, though it was just considered a curiosity at the time.