What's the difference between a flashlight and an impact drill?
The only force flat rotary electric drill, impact drill and rotary force (hammer) in addition to one axial vibration force.
The drill bits used are not the same.General electric drill is small power, drill iron sheet, drill wood whatPercussive drilling is usually made of concrete, or wall holes, the power is relatively large.
An electric drill can drill holes in various metals, woods, plastics, etc.. Because of stone, brick, concrete is hard and brittle properties of metal and bit strong wear on these materials requires the use of drilling drill, drill hammer (hammer) inlaid with hard alloy with high hardness, impact drill impact and rotation (as with the drill rod drill in as the rock), while on one hand, the stone became a little bit to be cut down into a hole. If you use ordinary drill in drilling stone or concrete, ordinary drill blade will soon be blunt to scrap, and rotation is the impact of improving the drilling efficiency.
