1. drill (Drill bit) applications that require gutting the wood inside the circle out there are two parts to the body. The end of the spiral Helix sharp twist at the end is a little late to be buried and absorb the rest into the wood. Spiral, have both coarse and fine. The size of the drill called fractional sizes such as 16 inches of 3/16 "(the size of these refers to the diameter of the holes to be drilled) at the base of a slender triangle. Champa hold tight for
two. Shank extending the head (Expansive bit) distinctive head can be enlarged or reduced by moving the end of the shank. Use holes from 1 "up to drill up to 4" for drilling keyhole. And water pipes (A house with a wooden lid)
3. Drill hole depth (Foerstner bit) looks at the shank ridge. Both are threaded and non-threaded. The drilling depth is not to drill. For drilling in various work well as a keyhole or puncture holes speakers, radio, etc., with a diameter ranging from ¼ "-2"
4. Drill particular job. (Straight-shank drill) drill holes using a small circular nature of drills with two side wings pollen spiral. Each spiral groove for storing wood chips. Size available in the market since 1/16 "- ½" (size is subdivided resolution than other types for specific applications) used to plug holes in the nail head into the corner of the table, chairs, frames, etc.
5. shank. Auto (Automatic drill bit) used for drilling small holes as well as Article 4, but it works much better. When used in conjunction with an automatic screwdriver You can also use just one hand to operate it.
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