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Cordless drills are one of the most common handyman tools that feature portability compared to wired electric drills. Most of the cordless drills nowadays use lithium ion rechargeable batteries.
It is important that comparison tests and assessment be performed before purchasing the power tool you needed. It should focus on the balance of use and functionality and its easy usage. It is also a must to know the specific function we require for our tools that will help us in deciding the right tool to purchase.
In most cases, we consider buying the biggest and most powerful tool that we can buy, but this is not applicable for portable power tools. They can perform as well as bigger tools. There are less expensive cordless drills which offer more features compared to larger power tools.
 Dewalt cordless drill with charger and battery  AU $100.00
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 DEWALT 18V XRP CORDLESS COMBO KITBAGRADIO EXCELLENT AU $415.00
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 DeWALT DCK450X 18v 4 Tool Combo Kit DC390 DC385 DCD950 AU $151.72
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 DEWALT DC988 18V HAMMERDRILL 2 XRP BATTERIES¼Œ1 CHARGER AU $215.00
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 DeWalt 18V CORDLESS COMBO 11 PIECE AU $520.00
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Here is a quick guide on different cordless drill types and uses:
•Cordless drill/drivers: These are the most common type of cordless tools. They are capable of drilling holes and can also function as screwdrivers. They come with adjustable clutches that reduces the torque power applied to a screw. These cordless drills are ideal for home use with their multi-function capability.
•Cordless hammer drill/drivers: These are types of cordless tools that are capable of drilling bricks and cements. These tools are heavier but have the power to penetrate hard objects. These tools come with special designed clutches that function similarly with a jackhammer while spinning.
•Cordless impact drivers: These power tools are ideal for driving large screws commonly used for buildings. These are capable of sensing resistance and they automatically increase the torque power so as to prevent the bit slipping out of the screw head.
•Cordless screwdrivers: These tools are smaller and lighter compared to the other cordless tools. With their size, they are sometimes called palm drivers. They are ideal in making picture frames, shelves, and furniture assembly.
In choosing the best cordless drills, it is a must to look into the features that these tools can offer. Here are some important cordless drill features that we should take into consideration when choosing the one for our use.
•14.4 volt to 18-volt cordless drills: A higher voltage is best for more power and longer usability. A 12-volt cordless drill is quite enough but if you are planning to add a circular saw that uses the same battery, it is best to choose a higher voltage. This would be a good investment since you can switch batteries with your other cordless tools. A 36-volt lithium-ion tool is best for full time use in construction sites while a lower voltage is convenient enough for your household jobs.
•Choose a fast charger. A fast charger is best in most situations. New models of cordless drills come with a charger with 30 minute or even as fast as 15 minute charging time. It is best to choose a cordless tool that comes with a smart charger. These chargers are capable of automatically turning off when it detects that the battery is fully charged, which prevents overheating and avoids damage to the batteries.
•Lithium-ion batteries: Choose a cordless tool with lithium-ion batteries. These batteries are expensive but they have longer lifespan compared to NiCad batteries. In addition, they provide three times running time compared to their predecessors.
•Torque power: A general rule applies that the higher the voltage, the higher is the torque. Remember a powerful torque can do the job quickly and efficiently.
•Pressure-sensitive trigger: This is a very convenient feature, which is used to decrease the speed of the torque as the screw head reaches the wood and prevents stripping or breaking it.
•One-sleeve keyless chucks: This feature allows an easier way of tightening the bits in place even with one hand. It is important that the chuck should be able to grasp the bits firmly and prevent slips.
It is best to choose your power tool with careful assessment based on the most essential features and vital details of the said tool.
By: David H. Urmann
About the Author:
Adjustable bit: comes with an adjustable cutter to bore holes of varying sizes. Used for drilling holes for piping or wiring where a rough cut is acceptable.
Around-the-corner bit: to cut curved holes in tight corners with an angled cutting surface.
Auger Bits: designed to drill holes in wooden material. The drilling end has a screw head so that the bit can self feed.
Brad-point drills: similar to standard bits but have a sharpened point that makes it easier to start in wood. Drills cleaner holes than a spade bit.
Counterbore: a drill bit which permits a screw to be driven beneath the woods surface. The hole can then be filled with a plug.
Countersink bit: has an angled tip that's designed to form a depression for screw heads.
Drill Saw bit: Used to cut holes in metal and wood. Can enlarge existing holes.
Expansion bit: another term for adjustable bit. An expansion bit uses an adjustable cutter to bore holes of varying sizes.
Fly Cutter: used on a drill press to cut circles. The diameter of the circles can be adjusted by changing the cutter setting.
Forstner Bit: used to a create a flat bottomed hole in wood, a mortise can be formed by cutting overlapping holes. Also used to a create a segment of a hole at the edge of a board. Use only in a drill press.
Glass bit: has a carbide tip for drilling through glass.
Hole saws: cuts holes from 1" to 6" in diameter, have a center bit for guiding the cutting edge of the saw.
Masonry bits: have carbide tips for drilling holes in masonry, use at speeds below 400rpm.
 Makita LXT218 18v Combo BHP454 BTD141 BL1830 X 2 DC18RA AU $445.00
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 Makita 6281DWPE Cordless Drill Driver 144V Complete AU $141.00
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 Makita LXT702 18v 7 Tool Lithium Ion Cordless Combo Kit AU $930.00
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 Hitachi 18v Lithium Ion 4 Tool Combo Kit KC18DBL 30AH AU $445.00
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 Hitachi 18v Lithium Ion Drill Impact Driver Combo NEW AU $405.00
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 Makita LXT211 18v Combo BHP452 BTD141 BL1830 X 2 Lithiu AU $315.00
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MultiSpur bit: drills holes large enough to run pipe or conduit through. A threaded screw in the center of the cutting circle pulls the work towards the cutting edge.
Nail Spinner: used to start finishing nails, prevents wood from splintering as it is driven in. A hammer is used to finish the job.
Reamer Bit: a tapered bit that can be used to fit into an existing hole either to enlarge it.
Rotary Files: used for the same purpose as a conventional file, great for expanding holes in metal and cleaning up rough edges.
Paint Mixers: consist of a shaft with fan type blades. Put the shaft into the paint before rotating to avoid splatter.
Plastic Bit: has a tip that prevents splintering when drilling in plastic. Drill slowly and reduce pressure as you reach the other side of you work.
Plug Cutter: can be used to cut out cylindrical shapes from wood. These small cylindrical plugs are used to cover screw heads. This bit should only be used in drill press.
Screw driving bits: used for driving screws.
Screw Pilot bit: used to drill a pilot hole, body hole and countersink all at the same time.
Spade bit: has a sharpened point and used for drilling large diameter holes in wood. These bits work best at fast drilling speeds, but remember to start slowly.
Step Bit: a tapered bit with up to 13 diameters as the bit penetrates the work it drills a hole with an increasingly large diameter.
Twist drills: standard drill bits, used for drilling small diameter holes in wood and metal.
Wire Brushes: used to clean up metal, remove rust. Available as either a cup or a wheel with wire brush on the rim.
Woodscrew bit: available in a variety of sizes to match particular screw sizes. Woodscrews are used to drill a pilot hole, body hole and countersink all at the same time.
By: David Kowalczyk
About the Author:
If you need to know more information about drill bit types, then visit our site completely devoted to drill bits.
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