A power tool isa tool powered by an additional source of energy and mechanism that is not the exclusive manual labor used in hand tools. The most common types of power tools use electric motors. Combustion engines and compressed air are also commonly used
Other energy sources include steam engines, direct-burning fuels and propellants as in powder-actuated tools, or even natural energy sources such as wind or running water. Tools powered directly by
Animal Power are generally not considered power tools.
Power tools are used in industry, on construction sites, in the garden, for household work such as cooking, cleaning and around the house for driving (fastening), drilling, cutting, shaping, sanding, milling , polishing, painting, heating and more.
Power tools are classified as stationary or portable, where portable means manual. Portable power tools have obvious mobility advantages. However, stationary power tools often have advantages in speed and accuracy. A typical table saw, for example, not only cuts faster than a regular handsaw, but the cuts are smoother, straighter, and more square-edged than you would typically get from an electric handsaw.
Some stationary power tools can make items that cannot be made any other way. Lathes, for example, produce truly round items.
Metalworking stationary power tools are commonly referred to as machine tools. The term machine tool is not normally applied to stationary woodworking power tools, although such usage is occasionally heard and in some cases, such as drill presses and bench grinders, the exact same tool is used for both woodworking and metalworking
The tools can be: hand tools, such as Screwdrivers, brushes, trowels, wrenches, knives, crimpers, clamps, etc. Power tools which may be electric, compressed air, liquid fuel, hydraulic power or powder powered and may include: mixers, saws, cutters, drills, grinders, guns, grinders, etc .