A plasma cutter like the CUT 60 utilizes a high-velocity jet of ionized gas, called plasma, to cut through conductive metals. The CUT 60, specifically, is a 60-amp plasma cutter, capable of cutting through various metals, including steel, stainless steel, aluminum, and copper. It can handle material thicknesses up to 20mm or 7/8 inch, with some models offering even greater cutting capabilities depending on the material.