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Drills are staple of any toolkits, whether in DIY project or industrial work. A drill used a motor, and a bit (or tip), to bore through material. This has many uses .
Cordless Drill :
Cordless drills are more compact and lightweight, not to mention convenient. Traditionally less powerful than corded model, cordless drills these days are powerful enough for most jobs.
Corded Drill :
There are few advantages to corded models. Most importantly, you won’t have to worry about the battery running out when you’re in the middle of a job, or recharging the drill – or about situations where the battery wears out and you can’t get replacements. Another consideration is speed: Corded drills have higher top speeds, which makes them more suitable bits and for work such as paint stripping (which can be done using paint stripping wheel attached to the drill). Also, in terms of ergonomics, some people find corded models more comfortable..
Traditional Drill :
A traditional drill ( or just “rotary drill”) is most affordable than the other types, and good enough for most non-specialized work – such as drilling holes and screws into wood.
Hammer Drill :
A hammer drill has a “hammer” mode. While the drill bit rotates as in traditional drill, the hammer mode has the effect of pushing into the bit with force. This makes it more suitable for drilling into brick, cement, and such. These are larger, heavier, and louder than traditional rotary drills.
An impact driver has a “rotary impact” action. In hammer drill, a force seems to be applied into the drill bit; in an impact driver, a force seems to be applied to the turning action of bit. These are as compact as traditional drills, and are more suitable to driving in screws and bolts. If you needed to screw a bolt into a block of cement, you’d be best off with an impact driver.