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Tool Feature: Cordless Impact Drivers

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Pages in this Story:

• Impact Drivers: Your Next Cordless Tool
• Rapid-fire rat-a-tat-tat delivers driving force
• Pluses and minuses
• Your drill buying decision

Rapid-fire rat-a-tat-tat delivers driving force

Rapid-fire rat-a-tat-tat delivers driving force

Like a typical drill, an impact driver relies--at least initially--on the tool's motor and gearing to turn the chuck for drilling or driving. When the going gets tough, though, an impacter switches modes to engage the hammer-and-anvil system, shown at right, to kick its rotational power into overdrive. In impact mode, the chuck rotates much slower but with much greater torque. (Watch a free video that demonstrates this action in motion.)

Watch a free video on impact drivers

Continued on page 3: Pluses and minuses

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Comments (1)

coltons4 wrote:

i cant get it to work ethier i love impact drivers they make woodworking esear i use screws for all my projects oh and you guys who cant see the video impact drivers reqirr a learning curve i reccommend getting a12 volttheir esear to work with im not a begginer i plan getting the milwaukee m18 impact driver on the first page

6/23/2011 09:47:28 PM Report Abuse