The plasma power supply ensure very high cutting speeds, with an unusually clean and almost perfectly square cutting edge. From its infancy in the 1960s, plasma cutting has progressed to become widely used in both machine-based and hand-held applications. Over the years technology improvements have led to better edge quality, faster cutting speed, longer consumable parts life, and lower long-term operating cost. These improvements have been applied primarily to Cnc Machines that cut flat sheet and plate into precision components for a variety of industries.