When the two flanks that make a drill's point are cut at the same angle, these goals amount to the same thing. You can use a drill guide to ensure the correct angle of the bit tip, about 118 degrees.

Sharpening Your Specialty Drill Bit. To sharpen the step bit, you can use a cone-shaped grinding bit with a Dremel. ... You also could cut yourself, as the angle grinder spins very quickly.

The CRL Weldon Countersink set has an 82 cutting angle and is ideally used for aluminum material. Its best suited for a 1/4 or 3/8-inch drill chuck since it has a 1/4-inch (round) shank diameter.

Tercel Oilfield Products today announced the release of the Patented MicroCORE™ Cutting System, its newest PDC Drill Bit innovation. Tercel Launches MicroCORE™ Cutting System at SPE ATCE.