Power Tools for the Home â Electric and Cordless Drills
Arguably one of the most important inventions in modern times, the portable drill has proven to be one of, if not the, most important and useful tool today. In this article I’ll offer a few tips on how to choose the right power or cordless drill for your needs.
Choosing A Drill:
Because of its versatility, the electric or battery powered drill is a wise choice for the homeowners first portable power tool. It can drill metal, wood, plastic, concrete, and perform many other operations as well.
The size of the drill is determined by the largest drill shank (the shank is the part of a drill bit grasped by the chuck of a drill) its chuck will accept, which may be ¼, 3/8, ½, or ¾ inch. The ¼ inch size is probably the handiest for the average job around the home or workshop. A drills power varies with size and make but typically ranges from 1/5 hp for the ¼ inch models to as much as 1 ½ hp for the ¾ inch models. There are some heavy-duty hand held models with higher HP ratings, but for everyday use they would be overkill. Speed usually decreases with size (though turning power increases), ranging from about 2000 r.p.m. for the ¼ inch size to around 1200 r.p.m. for 3/8 inch and 600 r.p.m. for ½ inch drills. The larger ¾ inch drills (more commonly used for professional and industrial work) are commonly in the 250-475 r.p.m. range. The slower speeds of the larger drills provide greater turning power (torque) necessary for driving large diameter bits and hole saws. Today there are models that perform in all r.p.m. ranges.
The high speed of the ¼ inch drills equips them no only to drill holes up to ¼ inch in diameter in metal and ½ inch in wood, but also for sanding. Variable speed control is available on most models these days as well as the feature to reverse the drills direction. The speed control lets you select the best drilling speed. Reverse is useful in backing out wood bits from deep holes.
Heavy duty drills of any given size vary more widely in price than do the light-duty models because of differences in bearings, wiring, and other features. For normal home use, heavy-duty features are not usually needed.
Most power drills are equipped with 3-wire grounding cords to protect the user from shock in case of internal electrical damage. Although becoming rare, if you buy a drill with a 2-prong plug, be sure the tool is a type in which the outer shell and chuck are completely insulated from the wiring. Such drill are commonly termed double-insulated drills.
Cordless drills come equipped as kit complete with one or two rechargeable batteries, battery charger, as well as a polyethylene plastic carrying case. The rechargeable batteries manufactured today are a far cry from the earlier attempts in power, longevity, and durability. 12 volt, 14.4 volt, 18 volt, and 24 volt batteries are now the ordinary instead of the exception.
Whatever drill you buy, check the guarantee as well as the availability of parts. Your best bet is to opt for the quality of a reputable manufacturer. Keep in mind that this is a substantial purchase of a toll you can reasonably expect to be in action years from now. Do your homework; pick the right tools for your needs, take proper care of it, and it will take care of you for years to come.
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Tired of Being Tied Down? Then Buy Cordless Power Tools and Free Yourself!
Do you ever feel like you’re tied to the power outlet when using electric (corded) power tools? Does it always seem as if you could only have 2 more inches of power cord for that last spot but you just can’t reach? Well then unplug that electric power tool and quit dragging around that tangled mess of extension cords. Buy yourself a variety of Cordless Power Tools and feel the freedom to go anywhere and work anywhere you want to. Long lasting batteries and high torque motors with a lightweight design make them perfect for every household and jobsite.
Cordless power tools are a great, all around tool for using on the job or around your house. Cordless power tools are small and compact but pack a lot of power and with today’s battery technologies, they can run longer than they ever have. Some cordless tools come with 1 hour battery charger so Buy yourself 2 batteries and run all day, one in the power tool and the other on the charger. Buy yourself a selection of cordless power tools like cordless drills, cordless circular saws, cordless sanders, cordless sawzalls, cordless hammer drills, and much more. The possibilities are endless and no job is too big to handle.
When ever I have any work to do on the roof of a house, I always prefer using cordless power tools because I hate having to drag around extension cords that are always in a tangled mess. Extension cords are always falling off the roof and snagging on everything they touch. So when I work on the roof I try using cordless drills, cordless saws, cordless nail guns, and everything else that is cordless because it just makes it so much easier to work and I can get more done without having to stop to pull on an extension cord.
Extension cords are very dangerous in the worksite because of high voltage current passing through them with very thin insulation to protect you. This could cause electrical shock if working around water or metal. Extension cords are always getting in the way and may cause a person to trip over them which could cause injury or could be fatal if working in high places so please be careful.
Cordless power tools are taking over the tool industry with their long lasting batteries and high torque motors. Most cordless power tools come with a convenient carry case for storage and protection which easily stores anywhere in your house or in your work truck. You can use them to build a house or just use them around your house. Try buying cordless power tool kits and get all of the tools in one package to get started right away.
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Modern Power Tools – the Lithium Ion Cordless Drill
Power tools are essential for those jobs, which require more intense workmanship that ordinary tools cannot handle. A power tool is basically a tool, which is powered by an electric motor or alternatively a compressed air motor or petrol driven motor. They are typically used in the construction industry but are also used around the house to complete those otherwise hard to do jobs. Power tools are used for cutting, drilling, shaping, grinding, painting, sanding and polishing. Machine tools are a form of power tools used in metal work. It is not uncommon for the same power tool to be used both in wood and metal work.
The first used power tool was the lathe. Power tools were initially developed during the time of the industrial revolution. When factories began to use power tools to drive belts from overhead shafts. The main power source was a water wheel or later a steam engine. These tools were stationary until the introduction of the electric motor in the 1880s, which made the self powered stationary and portable tools we know today possible. The electric motor has remained the preferred source by which stationary power tools are driven. These tools use a cord but what has become increasingly popular for portable power tools is the battery. However batteries still have limitations because of they run out and lack sustaining power. Cost of buying and maintaining the use of batteries keep the cordless versions in lower demand on the market. Nailers and paint sprayers more frequently use air pressure, while chain saws, weed eaters and lawn motors have a preference for petrol driven motors.
One of the most popular power tools is the cordless drill, which is a type of electric drill but instead of being connected to a wall socket uses rechargeable batteries. Typically cordless drills come in the hammer drill configuration and mostly have a clutch setting, which allows them to be used for driving screws. In order to continue working without much interruption the tradesman will have a number of spare battery packs charging while drilling, so that he or she can quickly swap them.
The earliest cordless drills used 7.2V battery packs but over the years the battery voltage has increased to 18V and more, thus allowing these tools to produce as much torque as those drills connected to a main power supply. The main disadvantage of most current cordless drills is the use of nickel-cadmium (NiCd) batteries, which develop a “memory effect” or internal short circuits due to dendrite growth. This severely limits their usefulness and life span and in turn creates a hazardous materials disposal problem. Drill manufacturers are now producing lithium ion batteries. Makita Electric Works and Milwaukee Electric Tool Corporation are two such manufacturers producing lithium ion batteries. The main advantages are lack of memory effect and very short charging time. Lithium ion batteries can provide an hour of work per twenty minutes of charging instead of vice versa. These batteries also have a constant discharge rate meaning that the power output remains constant until the battery is depleted, something that nickel-cadmium batteries lacks. This constant discharge rate makes cordless drills much more versatile. Lithium-ion batteries also hold a charge for a significantly longer time than nickel-cadmium batteries, about 2 years if not used, vs. around 4 months for a nickel-cadmium battery.
Cordless drills will increase in their popularity as science overcomes its’ limitations and as power tools become increasingly powerful.
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