How does a CO2 laser cutting machine work? 

Laser cutting is a type of thermal separation process. The laser beam hits the surface of the material and heats it so strongly that it melts or completely vaporizes. Once the laser beam has completely penetrated the material at one point, the actual cutting process begins. The laser system follows the selected geometry and separates the material in the process. Depending on the application, the use of process gases can positively influence the results. 

How does CO2 laser engraving work? 

During the process of laser engraving, the laser beam impinges on the material, exposing it to a great deal of heat. Depending on the exposure time, the color changes and creates a contrast, or the material evaporates or burns. The resulting laser engraving is permanent and very resistant to abrasion.