Cordless drill

Cordless drill is also called a cordless drill driver. This is a tool that has a bit attached to it for drilling holes or drive fasteners. It's an electric tool that does not require extension code or external power source of function. It runs on a rechargeable battery and remains active as long as the battery is charged. The tool comes in different sizes and power capacity depending on the voltage rating. Some models are at 7- volts while others go up to 36-volts. High voltage comes with high rotational power and also makes the drill bulkier and heavier to handle. It is equipped with a slip clutch to ease the adjustment of the quantity of torque required for a particular screw driving task. Hence you can use it in any working environment due to its mobility. Electricians, carpenters and handymen prefer to use it.

Impact driver

During operation it has a hammering or impacting action which makes it to also called impact drill. Basically it's a fastener driver since its head only accepts hex-shank screw bits. There is a collet where hex- shanked driver bits are fastened. This tool has very high torque motor output and impacting action which enables it drive screws fast and easily. Carpenters often use it to drive dozens of screws or very long screws in quickly when building cabinets, decks fences and installing tile backer boards. Screws that are more than 1 inch longer and fat lag screws are faster driven by an impact driver compared to a cordless drill. This because it uses both bit rotation and concussive blows to force screws into thick and dense woods.

What are the differences between a cordless drill and an impact driver?

Size versus power. The power to rotate bits is called torque force; cordless drills have plenty of it. They come in small, medium and large sizes. Smaller cordless drills are less powerful. On the other hand impact drills could be small but have higher drilling power.

Useability. Driving screws using a cordless drill requires one to get his weight behind the drill to ensure the screws move in the required direction. Otherwise you may trip out the screws, bend the screws or sink the screws too far. One hand is enough to drive screws in tight places using an impact driver. Moreover, impact drivers are secured with a simple chuck release while cordless drills require twisting the chuck to an open or close position to secure the drill.

Hex shafts. This is one advantage of a cordless drill which allows one to use numerous standard bits with a drill. It's a keyless chuck accepts many and hex- shank drill bits and screw driving bits. Other accessories it can accept includes: rotary sanders, hole saws and wire-wheel brushes. However, in impact drills one can only use hex shaft drills and driver bits only.
Noise. Cordless drills are advantageous are they produce less noise while impact drills requires one to use ear muffs due to their sometimes irritating noise.



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    June 2013