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Drill Bits

You can never have too many drill bits because they tend to wear out with use and must be sharp in order to drill smoothly. Fortunately, the same bits can be used for a hand drill, a power drill, and a drill press. The variations, other than size, are primarily in the composition and the intended material to be drilled. The other difference is in style: a twist bit (looks like a candy cane) or a spade bit. (flat with a point on the end).

Twist Bits

Twist bits can be used on wood, metal, plastics and other soft materials. The most frequent complaint of twist bits is that the smaller diameters sizes break easily, so use care not to apply any diagonal force to the bit when drilling.

Carbon steel bits are designed for drilling wood, so don't use them on metal. High speed steel bits, on the other hand, are god for drilling most types of material. A third variety, Titanium coated bits (they are gold in color) is especially designed for drilling metal because the coating hardens the bit and provides a small measure of self-lubrication.

Masonry Bits

Use a masonry bit for drilling brick, block, stone, quarry tiles or concrete. The cutting tip is made from tungsten carbide bonded to a spiralled steel shaft. When using a masonry bit, use a slow speed setting so that you don't overheat the tip.

Specialty Bits

Other bits are available for drilling tile and glass, dowels, large holes, holes with flat bottoms, and for countersinking screws. See your retailer or search through the advertisers on the right for more details on these specialty bits.

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