countersink bit

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Noun1.countersink bit - a bit for enlarging the upper part of a holecountersink bit - a bit for enlarging the upper part of a hole
bit - the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press; "he looked around for the right size bit"
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References in periodicals archive ?
Simply drive a countersink bit deep enough to create a recess called a counterbore.
You'll also want to have a rubber mallet, collection of hollow ground screw bits, good SAE hex wrenches, and a small blade screwdriver to "help" things into place, a 1/4" countersink bit, a hand drill, and maybe a Dremel or small file in case you need to open the stock up a hair.
Other tools that will come in handy are a hammer, plane, screwdriver, handsaw, square/mitre gauge, workbench with clamps, a countersink bit for the drill, nail punch and 80 and 100 gauge sandpaper.
Use a hammer and nail set or an electric drill with countersink bit to join the frame pieces.
Get a countersink bit to drill the starter holes in the boards and scoop out space for the screw heads to set cleanly into the boards without splintering.
Rhodri Clark: Bit part:Of all the attachments invented to fit on a drill, the best has to be the countersink bit because it's such an easy way to make your work look satisfyingly competent.
To build the base, you need a table saw with dado blades, an electric drill, a 3/8-inch countersink bit, a 3/8-inch plug cutter, about 24 2-inch wood-screws, wood glue, a square, a chisel, and a belt sander.
6 countersink bit to drill pilot holes and make countersinks for the screws.
You'll need the same basic tools for both designs: a saber saw (for dog and cat silhouettes), a circular or table saw (for shelves, seat, and trim), an electric drill with a countersink bit for woodscrews, and a screwdriver and hammer.