DRILLS

MAIN PARTS

•1 General drill classifications

•2 Special drills

•3 Application of drills

General drill classifications

•A. Classification based on method of fabricating

•1. Solid Drills

•2. Composite Drills

•B. Classification based on design

•1. Flat drills

•2. Twist drills

•3. Special purpose drills

SPECIALTY DRILLS

•BTA DRILLS

•TREPANNING DRILLS

•GUNDRILLS

NOWADAY DRILLING

The end.