Introduction

Some carpenters still haul out a brace and expandable auger bit when they can't find a spade bit of the right size. But now the electric or cordless drill usually is the tool of choice. Not only can you drill a hole of about any size with a variable-speed power drill, but you also can use a drill to drive screws into wood or metal, buff and grind, and even mix paint or mortar.

Some carpenters keep two drills on hand-one for drilling pilot holes, the other for driving screws. That way, they don't waste time changing bits. A power drill with a keyless chuck speeds up a bit change, although you may find bits slip during heavy-duty tasks. For perfectly perpendicular holes, you'll need a drill press or accessory jig. But if you learn the techniques here and on the next three pages, you can bore holes that are straight enough for household carpentry.