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Compressors are mechanical instruments that increase the pressure of a gas in order to do work. Since gases are compressible, the compressor decreases the volume of a gas which increases its pressure creating potential energy for later use. Air compressors are a common type of compressor which are frequently used to run pneumatic or air tools. The major advantages of using pneumatic or air tools via an air compressor versus eletric tools are that the pneumatic or air tools running off the air compressor are cheaper and safer to use, they offer a greater power to weight ratio, and allow the user the ablity to get the job done with smaller lighter tools.
There are many types and sizes of air compressors. There are stationary models as well as portable air compressors. Compressors also come in a wide variety of sizes and use a range power sources. Other differences in compressors have to do with airflow and quality, as well as operating temperature. The operation costs are important as well. For mechanical operations, there are three different types of air compressors.
Saws are a tool that basically use a blade or wire with a rough surface to cut through a more pliant substance. There are as many types of saws as there are saw blades, from manual to power. In construction a common saw is the concrete saw. It is used for cutting many types of solid materials; concrete, brick, masonary or asphalt. Concrete saws generate a great deal of friction and require cooling to prolong the life of the saw. Concrete saws come available with a variety of power sources; gasoline, pneumatic or electrical.
