Laser cutting is a technique that uses a laser to cut material. Laser cutting is widely used in industrial manufacturing, but recently, many schools and amateurs have begun to invest in it. A laser is a high-energy beam that produces high temperatures to achieve a melted material. Because the temperature generated is very high, the melting process is very fast, and the material irradiated by the laser melts and evaporates in a short time, thereby achieving the purpose of cutting the material. This brings up a question, what material can the laser cut?