Twist Drills
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.
1: Design and Fabrication How the twist drill is manufactured.

2: Geometry Clearances, margins, lip and flute configurations

3: Shanks Straight and taper shanked drills..

4: Materials Various materials used for drills and their uses.

5: Sizes Three sizes indexes and charts: fraction, number, letter size

6: Specialty Drills