Published at Saturday, 25 August 2018. Impact Driver. By Celeste Harrell.
In conclusion, cordless screwdrivers are great for small, DIY projects. However, if you're working on larger projects requiring a bit more force and power, an impact driver is the way to go.
Impact drivers pack a lot more punch than screwdrivers. Using a motor or compressed air, it's able to generate a lot faster spin and a repeating "punch" that other tools can't duplicate. If you're slightly confused about the spin and punch, think about it this way. You're driving a screw into a board with a screwdriver. In comes your partner with a rubber mallet. Every few seconds, your partner slams the back of your tool. That impact increases the driving force of the tool considerable. Not only is the tool spinning and driving the screw with more torque, the constant pounding ensures the screw will make it through the material.
If you have ever attempted to put a 4" polymer-coated exterior screw into pressure treated wood, over your head, with a drill, and barely got partially in before it started to strip... you understand what we are talking about.
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