The drill, which is an important tool for woodworking, metalworking, construction and DIY projects, is a tool with a rotating drill bit used for drilling holes in various materials. Some specialized drills that are designed differently from the ordinary ones can also be used in medical operations and other applications.
Drills date back as far as the ancient Harappans and Egyptians periods and were known as "bow drill". The more technologically-advanced drills today, including the drill press, are evolved from these bow drills and is believed to be centuries old. Drills are powered by different sources including but not limited to human effort, water wheels and windmills, often with the use of series of belts. But in the late 19th century through the introduction of the electricity and the electric motor, electric tools, which are widely known as powertools, were developed. One of the powertools invented is the power drill. The invention of the first electric drill is credited to Arthur James Arnot and William Blanch Brain in 1889 at Melbourne, Australia. But in 1895, Wilhelm Fein invented the portable electric drill at Stuttgart, Germany.
Dewalt 18 Volt Kit
Just like other tools, there are also many types of drill, each with its own functions and features that can help a craftsman in his line of work. Types of drill include hand tools, pistol-grip or corded drill, hammer drill, rotary hammer drill, cordless drill, drill press, geared head drill, radial arm drill and mill drill. But the most common among users nowadays is the cordless drill.
Cordless drill is a type of electric drill which uses rechargeable batteries, but also have similar features to an AC mains-powered drill. These drills are usually available in hammer drill configuration. However, there are also some that have clutch settings which allow them to be used for driving screws. One more popular configuration for this cordless drills is the right angle drill, which allow a worker to drive screws in tight spaces.
Early cordless drills started with 7.2V interchangeable battery packs, but over the years battery voltages increased. This is because most craftsmen are relying on the power of their tools to be able to finish more work. The most common voltage for power drills today are 18 volts, but there are also 24V drills in the market. Most drill manufacturers use lithium ion batteries which are better than the traditional nickel-cadmium packs, because of longer life, less instances of self-discharging and short circuit due to dendrite growth. Lithium-ion batteries hold charge for significantly longer time as compared to nickel-cadmium batteries.
Voltages of cordless drills means their torque, which is the tendency of a force to rotate an object about an axis, fulcrum or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist. The higher voltage of a drill, the higher its torque. That means 24V drills can produce more torque, even as much as AC mains-powered drills. Another benefit of cordless 24V drill is its mobility as oppose to corded drills.
Electric powertools have definitely become very popular in the construction industry and among DIY enthusiasts. One of which are the cordless drills with obvious helpful benefits for all, from starters and hobbyists to the professionals. And these tools are continuously improving to make our life even easier.
Special Price!!! DEWALT DCK266L 18-Volt Lithium-Ion Compact 2-Tool Kit
Oct 28, 2011 07:42:27
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DEWALT DCK266L 18-Volt Lithium-Ion Compact 2-Tool Kit Feature
- DCD775 18-volt 1/2-inch compact hammerdrill delivers 350 unit watts out of maximum power
- DCF826 18-volt Impact Driver delivers 1,330 in-lbs of torque and-2,400 rpms offering power and speed to perform a wide range of fastening applications at faster speeds
- Compact lithium-ion batteries (DC9181) charge in 30 minutes and are compatible with the existing system of DEWALT 18-volt power tools produced since 1996
DEWALT DCK266L 18-Volt Lithium-Ion Compact 2-Tool Kit Overview
Includes 18V Compact Li-Ion Hammer Drill - DCD775, 18V Li-lon Compact Impact Driver - DCF826KL, (2) 18V Compact Li-Ion Batteries, 30 Minute Charger, Kit BoxSAVE NOW on the special offers below!
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| This DEWALT DCK266L 18-Volt Lithium-Ion Compact 2-Tool Kit ships for FREE with Super Saver Shipping. |
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