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2. List of drill and tap sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

   Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

3. Ice drilling - Wikipedia

   en.wikipedia.org/wiki/Ice_drilling

   Pneumatic drills have been used to drill shallow holes in ice in order to set blast charges, and rotary percussion drills, a type of drilling tool once in common use in the mining industry, have also been used for drilling blasting holes, but neither approach has been used for scientific investigations of ice. Percussion drilling is now rarely ...

4. Boring machine (carpentry) - Wikipedia

   en.wikipedia.org/wiki/Boring_machine_(carpentry)

   Before boring machines were invented, carpenters used hand-powered augers to bore holes. Most common were T-handled augers. The shape of the drill bits changed over time, with the spoon bit and shell bit being common before the invention of the spiral or twist bit in 1771 [1] which removes the cuttings as it turns. The exact origin of this ...

5. Brace (tool) - Wikipedia

   en.wikipedia.org/wiki/Brace_(tool)

   A brace is a hand tool used with a bit (drill bit or auger) to drill holes, usually in wood. Pressure is applied to the top while the handle is rotated. If the bit's lead and cutting spurs are both in good working order, the user should not have to apply any pressure other than for balance: the lead will pull the bit through the wood.

6. Wood auger - Wikipedia

   en.wikipedia.org/wiki/Wood_auger

   More modern versions have elaborated auger bits with multiple blades in various positions. [2] Modern versions also have different means to drive the shaft, resulting in various tools such as braces, wheel drills (the "eggbeater" drill), and power drills.

7. Drill bit sizes - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_sizes

   Fractional drill bit set by Craftsman. Fractional-inch drill bit sizes are still in common use in the United States and in any factory (around the globe) that makes inch-sized products for the U.S. market. ANSI B94.11M-1979 sets size standards for jobber-length straight-shank twist drill bits from 1/64 inch through 1 inch in 1/64 inch increments.