High-performance carbide drills

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Precision Dormer (Crystal Lake, Ill.) has developed a range of high-performance solid carbide drills specifically for machining composite materials. They’re designed for use with carbon fiber- or glass fiber-reinforced polymers and feature a patented point design that helps reduce thrust and torque requirements. This reportedly improves cutting efficiency and reduces splintering and delamination at exit. There is an internal coolant option for wet machining and a diamond-coated option to further enhance tool life. The range is available in diameters of 2.38 mm/0.09375 inch to 20 mm/0.79 inch, with lengths up to 310 mm/12.2 inches.