This particular geometry of the end mill so that each cutting edge simply remove less metal material, reducing the pressure on the teeth, the impact and harmonic vibration, the cutting process is more stable. Optional cooling tank guided along the helix angle of coolant into the cutting area.
     The concept is actually very simple. frank and is in charge of the destiny tool guy calamia Company (santa clara, California United States) of the two brothers, has been concentrated on the traditional solid carbide end mills. The outer surface of such a conventional cutter body, surrounded with two or more cutting edges. Inventor guy calamia suggested that if the distance from the original that cutting edge closer to second place plus the cutting edge of the tool in this tradition, will greatly improve the performance of this type of end mill. Just bring the significance of this invention razor blade second revolutionized shaving experience the same. According to this invention produced an end mill as shown in the drawings. This "raptor" end mill is characterized by three slots six blade, four or five slots eight blade slots ten blades.