A plasma cutter is a tool used to cut through electrically conductive materials, such as metal, by using a high-velocity jet of ionized gas, or plasma. This process involves creating an electrical arc between an electrode and the workpiece, which heats the gas to a point where it becomes plasma. The intense heat allows the plasma cutter to melt the metal, while a stream of gas blows the molten material away, resulting in a clean cut. Plasma cutters are commonly used in various industries, including manufacturing, automotive, and construction. They can cut through materials like steel, aluminum, and copper with precision and speed. The versatility and efficiency of a plasma cutter make it a popular choice for both professional welders and DIY enthusiasts.