Twist drill A standard drill bit with two twisted, fluted cutting edges to remove material Wood Flat drill Has a flat face, a pin at the bottom, and two cutting edges. Allows for a flat blind hole ...

Some tips even have different shapes entirely to improve performance, like the screw-like ones seen on the Bauer Wood Auger Drill Bit Set or the wide, flat ones on some of the Warrior Quick-Change ...

The drill bit drops into a clamp that presents it to ... All you need is a vise ($33 at Home Depot) and a flat file (less than $10 on Amazon). Give each of the upper faces four or five light ...