Cordless hammer drills are a must tool in any craftsman's or DIY enthusiasts' toolbox. The invention of the cordless drill and other cordless tools have made life much easier than lugging cables to and fro and are also much safer.
Most cordless hammer drills are 18 volt and are very powerful to drill materials like steel, wood, masonry and any surface a mains electric drill would be used for. The ideal way to work would be to have two batteries so one is always charging while you are using the other. The hammer action is a must when drilling concrete or masonry.
Drills Cordless
A cordless drill is quite suitable for drilling materials like wood, plastic and steel, but for a little more you would an all round drill in a cordless hammer drill. These drills can also be used as a power screw driver and with the reverse gear you are able to unscrew tight screws with ease. They come in 2 speeds and some have variable speed control also.
Powerful Ryobi hammer drills have a second handle attached to allow you grab the drill with both hands when drilling hard surfaces or when using large bits. These drills come with keyless chucks and capable of taking half inch or 13mm bits. One thing to remember if you want a hole half inch in diameter, begin with a small bit and use a several bits in between before using the half inch bit. This will prolong the life of your drill and is also a safe manner in which to work in.
Whether you use a powerful, cordless hammer drill or a mains electric drill the main requirement to drill holes especially in steel is a sharp bit; Bits for drilling steel lose their sharpness over time but can be sharpened on a grinding stone to their original state. One tip is to use some cooling liquid like oil or a mixture of oil and water; this will help to maintain the lifespan of the bits.
When using a drill make sure to wear safety goggles and do not have any loose clothing like long sleeves which could get wound around the bit and cause a serious accident. These cordless hammer drills are not toys and care should be taken when using them.
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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
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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