Graphical Construction Glossary >> General Construction. >> Power Tools >> Impact Screw Driver

Impact Screw Driver

A cordless electric screwdriver that uses vibration or impacts on the screw head to drive or remove screws.

Above is a cordless Makita impact driver. These drivers have a vibrating mechanism built into them that drives screws far larger and in harder timber than non impact versions. They are incredibly good at removing old and damaged screws. Similar to their larger relations the air operated impact wrenches they do have a tendency to sometimes go too hard and break screws, but once a feel is got for the machine I feel that very few people would change back to an ordinary driver after using one of these.
This particular one runs off 14.4 volt batteries and comes with a battery charger and spare battery.

An 18 volt Li-Ion DeWalt unit.

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Adam Smith 1723-1790

"When we build, let us think that we build for ever."John Ruskin 1819-1900