I have been working with electric drills for so long it's hard to believe that the drill at one time was not even a thought in a carpenter or woodworkers head. In fact, the electric drill wasn't even invented until 1899 by two men named Arthur James Arnot and William Blanch Brain in Melbourne Australia. The portable electric drill was invented in 1895 by Willhellm Fein in 1895, at Stuttgart, Germany.
The first electric drill wasn't as fancy as the drills we have today. It was just used for the basics, to make a hole in something hard. The first drills, even before the electric drill date all the way back to the Egyptians. These bow drills turned into a drill press machine which was powered by water wheels and windmills and were connected to a pulley system to make them operational.
Cordless Driver Drill
There are a whole bunch of different drills to be used for different jobs. Some drills are powered by hand and others, the newer ones are powered by electricity, air, and even internal combustion. Some drills are very large and are used primarily for hammering purposes. The hammer drill and jackhammer are normally used to break up rock. The biggest drills are the ones you can see in Texas to drill oil an are used to make large and deep holes in the earth. These drills are called drill rigs.
The smallest of drills are the oldest as well. Some of these drills have been used over the last few centuries. A few examples would be the bow drill, gimlet, eggbeater drill and pin chuck.
The most common drills and the ones that are abundant and most used today are the pistol-grip drill. These drills are shaped like a pistol with the trigger being the way the drill is powered on. You simply pull the trigger and the drill goes. Let go and it stops. These drills are so abundant today because you can purchase a plethora of different drill bits that can be used for a multitude of job descriptions.
You can buy drill bits to drill holes, fasten and unfasten screws and bolts, sanding, and sawing. So now instead of buying a new drill for each job, you would just simply purchase a new drill bit to use on the old drill.
Drills have beed used over a long period of time and will continue to be used to make our jobs much easier.
Christmas Sales DEWALT DC720KA Cordless 18-Volt Compact Drill/Driver 201
Dec 12, 2011 23:54:13
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Christmas Sales DEWALT DC720KA Cordless 18-Volt Compact Drill/Driver Feature
- Compact size allows users to fit into tight spaces
- Lightweight design (4.8 pounds) minimizes user fatigue
- 1/2-inch ratcheting chuck reduces bit slippage
- Dual speed range 0-500/0-1,700 rpm delivers optimal performance
- High-performance frameless motor delivers maximum power of 410 unit watts out
- LED worklight provides increased visibility in confined spaces
Christmas Sales DEWALT DC720KA Cordless 18-Volt Compact Drill/Driver Overview
The DEWALT DC720KA 18-Volt 1/2-Inch Cordless Compact Drill/Driver Kit is built around a versatile tool that makes quick work of a variety of driving and fastening tasks. With its high-performance, frameless motor; dual-range, variable-speed control; and comfortable grip, this tool is powerful and easy to handle. The Drill/Driver Kit includes a convenient one-hour Ni-Cad charger, two 18-volt Ni-Cad batteries, and a sturdy kit box.
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 Drill and fasten in one quick motion with the compact drill driver. View larger. |
 The comfortable ergonomic grip allows you to perform precision drilling in tight spots. View larger. |
The DEWALT DC720KA 18-Volt 1/2-Inch Cordless Compact Drill/Driver's high-performance, frameless motor is capable of delivering a maximum of 410 unit watts out, translating to performance in a broad range of applications. The drill/driver also features dual-range, variable-speed control--from 0 to 500/0 to 1,700 rpm--that makes material-specific performance easier to achieve.
 LED illuminateswork area. |
The DC720KA is built with an ergonomic grip for comfortable handling that assists in ensuring accurate results. Its balanced, mid-handle grip makes control easy, providing comfort and reduced fatigue when tackling extended applications.
This drill/driver weighs an easy-to-manage 4.8 pounds and features a convenient LED for visibility.
Cordless Design and Ratcheting Chuck
Being cordless, the DC720KA allows you to move quickly between projects without the hassle of a cord or outlet. With the one-hour Ni-Cad charger, you can reduce downtime and quickly recharge the long-life 18-volt Ni-Cad batteries.
 All-metal1/2-inch chuck. |
This 18-Volt 1/2-Inch Cordless Compact Drill/Driver Kit comes with a DEWALT warranty package that includes a three-year limited warranty, a one-year free service contract, and a 90-day money-back guarantee.
What's in the Box
DC720KA 18-Volt 1/2-Inch Cordless Compact Drill/Driver, one-hour Ni-Cad charger, two 18-volt Ni-Cad batteries, and kit box.
 Drill through masonry, wood, and steel with the powerful 18-volt drill/driver. |
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