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2. 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 ...

3. Wood auger - Wikipedia

   en.wikipedia.org/wiki/Wood_auger

   The lower edge of the blade is sharpened and scrapes the wood; the rest of the blade lifts the chips out of the way. It is powered with two hands, by a T-shaped handle attached to the top of the shaft. More modern versions have elaborated auger bits with multiple blades in various positions. [2]

4. Gimlet (tool) - Wikipedia

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

   A similar tool of larger size is called an auger. The cutting action of the gimlet is slightly different from an auger and the initial hole it makes is smaller; the cutting edges pare away the wood, which is moved out by the spiral sides, falling out through the entry hole. This also pulls the gimlet further into the hole as it is turned.

5. Earth auger - Wikipedia

   en.wikipedia.org/wiki/Earth_Auger

   A post-hole auger. An earth auger, earth drill, or post-hole auger is a drilling tool used for making holes in the ground. [1] It typically consists of a rotating vertical metal rod or pipe with one or more blades attached at the lower end, that cut or scrape the soil.

6. List of timber framing tools - Wikipedia

   en.wikipedia.org/wiki/List_of_timber_framing_tools

   drills for boring holes in timber framing were typically T-auger. The cutting edge of the bit can be of many shapes, the spiral auger being the standard shape since the 19th century. Timber framers boring machines were invented by 1830 and hold an auger bit. They made mortising easier and faster.

7. Brace (tool) - Wikipedia

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

   A brace and bit can be used to drill wider and deeper holes than can a geared hand-powered drill. The cost of the greater torque is lower rotational speed; it is easy for a geared hand drill to achieve a rotational speed of several hundred revolutions per minute , while it would require considerable effort to achieve even 100 rpm with a brace.