Your power drill can be used on several different materials. All you need are the proper drill bits.
The auger bit (figure A) is used for creating holes quickly. The holes aren't necessarily neat, but they're fast.
The spade bit (figure B) cuts wide holes in wood. It's not as fast as the auger bit, but the holes are neater.
The countersink bit (figure C) simultaneously drills a pilot hole and a recessed hole to hide screw heads.
A hole saw (figure D) cuts larger holes than the spade bit and is often used to cut holes for doorknobs.
The brad point bit (figure E) is a wood bit with a sharp point on the tip of the bit. The point presses into the wood to prevent the bit from shifting when you begin drilling.
A twist bit (figure F) is a strong bit that drills quickly through metal or wood.
A masonry bit (figure G) is used for drilling through concrete or brick.
A Forstner bit (figure H) is a versatile bit that combines the speed of the auger bit with the precision of the spade bit.
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