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Let's initiate with great old twist drills. Very good primarily for drilling metal, but they are probably used as much or more for drilling wood even though do shiny. You should have a predetermined of twist drills from 1/16 inch to 1/2 inch. In metal you run these bits at slow speed, shield for your windshield drilling wood they in order to be run with faster date. Twist bits tend to tear out wood on the exit, but additionally they are good to drilling