Laser cutting is a technological process that uses lasers to cut through materials. It is a relatively new production technique compared to many operations in the manufacturing world. The first known example of laser cutting dates back to 1965. Vastly less powerful or accurate than the modern-day equivalents.
CNC (computer numerical control) and laser optics direct the laser beam into the correct place and to create the prescribed pattern out of the material. By focusing the laser beam, the material is either melted, burnt, vaporized or is blown away by a jet of gas. The thinnest part of a focused laser is typically less than 0.3mm.
A pierce/hole must be done before each cut in order to start cutting anywhere other than the edge of the sheet. This is usually done using a very strong, pulsed beam and may take a few seconds to make the first pierce.