This article is about simplest primitive drill. For other manually operated drill tools, see drill § Hand-powered.
A hand drill with a hearthboard, used as a fire drill.
A hand drill is the simplest primitive method to produce rapid rotary motion of a rod. It consists in holding the rod vertically between both hands and moving these back and forth, in opposite directions, as in rubbing them. The rod typically is one or two feet long and half an inch in diameter.
Hand drills have been used by many primitive societies as a fire drill to start a fire.[1] It is still often learned as a useful survival skill. A hand drill could also be used as a tool for drilling holes in hard materials such as wood, stone, or bone.
For either use, the hands must also exert downward pressure while spinning the rod. As a result, the hands drift down the rod, and must be periodically raised to the top again. These interruptions can be avoided by cutting a notch at the top of the shaft, tying a cord through it, and then inserting the thumbs through loops in the cord. However, skilled operators can either maintain pressure with their hands almost stationary vertically; or, in a movement comparable to floating, can "float" their hands back to the top of the drill. [original research?]
Primitive hand-drill used for carpentry work in Palestine
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A handdrill is the simplest primitive method to produce rapid rotary motion of a rod. It consists in holding the rod vertically between both hands and...
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A pump drill is a simple hand-powered device used to impart a rapid rotating motion to a rod (the spindle or drill shaft). It can be used for fire making...
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water. Deeper wells can be excavated by handdrilling methods or machine drilling, using a bit in a borehole. Drilled wells are usually cased with a factory-made...
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games. The drill is practiced as follows: From under the basket, make a layup with the right hand, catch the ball under the net with the left hand and make...
used woodworking tools included axes, adzes, chisels, pull saws, and bow drills. Mortise and tenon joints are attested from the earliest Predynastic period...
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II, after which he graduated from school as an engineer and joined a handdrill company. Glock began as a manufacturer of curtain rods in the 1960s, and...
the bone through the skin (percutaneous pin fixation) using a power or handdrill. They also form part of the Ilizarov apparatus. Threaded K-wires are available...
automobile. Bevel gears are used as the main mechanism for a handdrill. As the handle of the drill is turned in a vertical direction, the bevel gears change...
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guide-channel for a drill bit (with either a handdrill or a press) so that the technician can easily and directly apply force from the drill to the fastener...
clamps, snips, hacksaws, drills, and knives. Outdoor tools such as garden forks, pruning shears, and rakes are additional forms of hand tools. Portable power...
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