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Electric Drill

A Brief History of the Hand Drill

Perhaps the most significant difference between human beings and the rest of the animal world is our ability to create and use tools. Tools have enabled us to perform tasks that would be difficult or impossible to perform otherwise. The drill is a perfect example of this. Without a drilling device we would be hard-pressed making a hole in a material like wood, let alone harder materials like concrete or steel, not that concrete and steel would probably exist without the use of other tools anyway, but that is a tangent I will ignore.

If we follow the history of the drill back in time we come to the ancient Egyptians and Harappans, who used a device called a bow drill, which although more commonly used for making fire, was also used in rudimentary woodworking tasks. It was also used by the ancients’ equivalent of the modern dentist, the thought of which I am sure would increase the heart rate of anyone with a phobia about dental treatment. The components of this device are the bearing block, the spindle, the fireboard and the bow. The string of the bow is wrapped around the spindle, which is held in place at one end by the bearing block and at the drilling end by the fireboard. Leverage is afforded the user of this device by the string attached to the bow.

Another simple device which has been used for hundreds of years is the pump drill. The components of this device are the drill shaft, a heavy flywheel, a narrow piece of board with a hole in the middle, and some cord. The flywheel is joined to the bottom of the shaft and the piece of board is placed over the top of the shaft by means of the hole. The length of cord is placed through a hole in the top of the shaft and is attached to either end of the board. There is a hole at the end of the shaft in which the bits are placed. The board is then held in place while the shaft is rotated until the board has lifted to near the top of the shaft and the cord is tightly wound round the shaft. The tip of the shaft is placed on the material which is to be drilled and downward pressure is placed on the board. The shaft spins rapidly and when the board reaches the bottom of the shaft it is allowed to rebound causing the cord to once again wind around the shaft, and the drilling can re-commence.

A more familiar device is the brace and bit, which is a drill with a u-shaped grip. The user puts pressure on the top of the drill with one hand and is able to provide rotational movement via the u-shaped grip with the other hand. The u-shaped grip could be considered to be a kind of crankshaft that provides increased torque in comparison to other hand drills, but with a slower speed of rotation. Another tool from the not too distant past is the old hand drill which looks like an eggbeater, and has a handle to hold with one hand on one side, and a rotational device with a handle on the other side, which provides the drilling momentum.

Tradesmen from the past would wonder at the comparative ease with which drilling tasks are completed with modern electric drills when compared to their primitive counterparts.

There are many kinds of drills being used these days, most of which have a pistol grip, and there are variations on the standard electric drill, such as the Hammer Drill, which has a hammering action which enables it to drill into masonry. The hammering action is able to be disengaged when not required. A more heavy duty drill is the rotary hammer drill which combines the hammering mechanism with the rotational mechanism.

Cordless Drills have provided a degree of independence from the requirement of being within cord’s length of an electric power outlet. While these drills have in the past suffered from the disadvantage of being reliant upon batteries which required regular charging and had a relatively short life span, in more recent times vastly improved battery technology is making the cordless drill a much more versatile option.

Perhaps in another hundred years or so drilling technology will have advanced to a point that will make our present technology seem as primitive to future generations as the bow drill does to us.

About the Author

Adrian is an online writer and researcher, and he invites you to visit his website 24v Cordless Drill for information about a range of tools, including the Makita 24v Cordless Drill.

How to use an electric drill

Obtain Superior 12Volt Cordless drill batteries for your Electric Drill

Drilling works are easy to accomplish given the right tools and equipment.  Hand-powered drills are used to make holes by revolving the drills with repeated rotary or hammering movement.  There are many different tools completing the drill family each intended for a particular purpose.

Drills are usually used in woodworks, metal works, construction and home improvement projects at home.  There are also specially designed tools for medical, space missions, masonry, and constructions purposes.  

Cordless drill is an electric drill with the use of rechargeable batteries.  It is similar to the featured of an AC main-powered drill.   The configuration is designed as a hammer drill with a clutch setting for driving screws.  They are, however, less useful than the corded type.  They were made for drilling holes through joist and studs for the electrical and  plumbing works.  The handles are usually made from polymorph making it easier to mold a shape of a  comfortable holder.  The main part of the drill is usually made from polythene that can strongly withstand high temperatures. Recently, cordless batteries were innovated to last longer and allows more drilling.  Large diameter holes drain the cordless drills fast.  In order for a worker to continue the work, he has to have spare Battery Packs.  When the battery is drained, all is needed is to replace it.  Otherwise, he has to wait for the drill to be charged and wait for an hour or more to continue with the task.  Good news is there are fast charging batteries that only takes 10-15 minutes, but still a sure stoppage of work.

Before, cordless drills have interchangeable 7.2 battery packs.   The development over the years came up with an increased battery charges.  The most commonly used is the 18V and there are also higher voltage drills such as 24V, 28V, and 36V allowing the tool to create as much torque as main-powered drills.  The use of nickel-cadmium batteries for these models have presented drawbacks because of limited battery life, self-discharging that will lead to short circuit caused by dendrite growth.  There is also a trouble in the disposal since it is a hazardous material.  Comparing  the advantages such as short charging time, longer battery life, and lighter weight of battery.  You can run the battery for One Hour with a 20-minute charging instead of charging the battery for an hour and running it for 20 minutes.

A 12Volt Cordless drill batteries available in Nickel-Cadmium for a cordless drill kit in a compact design.  A 12 volt drill will allow you to quickly drill into concrete walls.  The voltage is the main indicator of the toll’s worth.  The 9.6V is the lowest and 18V as the highest.  

Buy only the quality rechargeable or replacement batteries.  It’s advisable to compare prevailing prices to get the best rate possible.  When shopping online, you can also see store and item ratings.  It’s best to check the best quality available in the market.  It’s easy to find and contact suppliers of low-cost batteries in no time.

About the Author

Looking for the best products and lowest prices on 12-Volt Cordless Drill Batteries? We compare the best products and show you the lowest prices online at the Drill Batteries Center

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