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Bow drill being used to make a fire. Bow drills with green jasper bits were used in Mehrgarh between the 4th and 5th millennium BC to drill holes into lapis lazuli and carnelian. Similar drills were found in other parts of the Indus Valley civilization and Iran one millennium later. [6]
The ability to make fire, generally with a friction device with hardwood rubbing against softwood (as in a bow drill), was a later development. [ 13 ] Each of these stages could occur at different intensities, ranging from occasional or " opportunistic " to "habitual" to "obligate" (unable to survive without it).
A fire drill, sometimes called fire-stick, is a device to start a fire by friction between a rapidly rotating wooden rod (the spindle or shaft) and a cavity on a stationary wood piece (the hearth or fireboard).
A pump drill is a variant of the bow drill that uses a coiled rope around a cross-section of wooden stake spin the shaft by pumping up and down a cross-member. [16] [17] A fire plough (left), as opposed to a hand drill (right) The fire plough or fireplow consists of a stick cut to a dull point, and a long piece of wood with a groove cut down ...
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Firelighting (also called firestarting, fire making, or fire craft) is the process of starting a fire artificially. Fire was an essential tool in early human cultural development. The ignition of any fire, whether natural or artificial, requires completing the fire triangle, usually by initiating the combustion of a suitably flammable material.
It can be used for fire making or as a drill to make holes in various materials. [1] It consists of: the drill shaft, a narrow board with a hole through the center, a weight (usually a heavy disc) acting as a flywheel, and a length of cord. The weight is attached to the shaft, near the bottom end, and the hole board is slipped over the top.
Some forms of drills have been used since Pre-History, both to make holes in hard objects or as fire drills. Awl – The shaft is twisted with one hand; Hand drill – The shaft is spun by rubbing motion of the hands; Bow drill – The shaft is spun by cord of a bow that is moved back and forth.