Drill Nomenclature and Geometry - NEMES
2005-5-6 · Drill Nomenclature-Points. •Elements of Drill Points. •Lip Relief Angle. –Varies with the diameter of the drill and hardness of the material. –On larger diameters and drills for harder materials, lip relief is decreased to as low as 8°. –Drills for soft materials and small diameters have high relief angles up …
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