Plasma Arc Cutting
A thermal cutting process where a constricted, ionized gas jet melts the material and simultaneously blows it out of the kerf. It enables clean cut edges and high travel speeds on electrically conductive metals.
Plasma cutting uses an electric arc that is pressed through a nozzle, heating the gas so strongly that a plasma jet is created. The jet melts the metal and blows it out of the kerf at the same time. This only works with electrically conductive materials, i.e. steel, stainless steel, or aluminum. You have to maintain the distance between the nozzle and the workpiece cleanly, then the cut will be straight and the edges stay clean. If you go too fast, slag will stick to the bottom edge; if you go too slow, the cut edge becomes wider and unclean. Best to try the settings on a scrap piece before you go to the workpiece.