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2. Impact driver - Wikipedia

   en.wikipedia.org/wiki/Impact_driver

   A manual impact driver (for use with hammer) with screwdriver bits and adapters An impact driver is a tool that delivers a strong, sudden rotational force and forward thrust. The force can be delivered either by striking with a hammer in the case of manual impact drivers, or mechanically in the case of powered impact drivers.

3. Impact wrench - Wikipedia

   en.wikipedia.org/wiki/Impact_wrench

   A 1/2" drive pistol-grip air impact wrench. An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft ...

4. Oscillating multi-tool - Wikipedia

   en.wikipedia.org/wiki/Oscillating_multi-tool

   The crescent pattern of the oscillating rotation cut through the hard cast without damaging the patient’s skin. The plaster cast saw was equipped with a more powerful gearbox to upgrade it to a chassis saw. The plaster cast saw formed the basis of FEIN's range of oscillating power tools. [2]

5. Hammer drill - Wikipedia

   en.wikipedia.org/wiki/Hammer_drill

   A corded hammer drill next to a drill bit and a chuck key. A hammer drill, also known as a percussion drill or impact drill, is a power tool used chiefly for drilling in hard materials. [1] [2] It is a type of rotary drill with an impact mechanism that generates a hammering motion.

6. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   The Phillips screw design was developed as a direct solution to several problems with slotted screws: high cam-out potential; need for precise alignment to avoid slippage and damage to driver, fastener, and adjacent surfaces; and difficulty of driving with powered tools. Phillips drive bits are often designated by the letters "PH", [11] plus a ...

7. Grinding (abrasive cutting) - Wikipedia

   en.wikipedia.org/wiki/Grinding_(abrasive_cutting)

   The tolerances that are normally achieved with surface grinding are ±2 × 10 −4 inches (5.1 μm) for grinding a flat material and ±3 × 10 −4 inches (7.6 μm) for a parallel surface. [ 4 ] The surface grinder is composed of an abrasive wheel, a workholding device known as a chuck , either electromagnetic or vacuum, and a reciprocating table.