Machining is a process of shaping work pieces by removing excess or exceptional elements from them. The process is realized by employing a power-driven milling machine, or a machine tool, such as a lathe, or drill. Machining is an integrant of almost all metal manufacturing processes. Some plastic parts are also subjected to machining. Most machining processes can be categorized as those that eliminate metal from a work piece, or those that structure a metal in a work piece. Machining operations powered by advanced technology might engage electro-chemical erosion, electrical discharge, or laser cutting for shaping metals.
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