How does a laser engraver work on metal?

Laser engraving is a versatile and precise technique for creating marks on a variety of materials. Laser engraving on metal can produce beautiful and durable decorative features as well as industrial markings.

How lasers work

The lasers used of laser engravers are usually CO2 lasers or fiber lasers, which produce the laser beam. The focused heat from the laser beam causes changes to the metal surface, resulting in the formation of the mark. It is important to note that in most cases, the high temperature will cause the metal surface to melt or evaporate, which requires proper ventilation and fume extraction to remove the metal particles and fumes from the operation.

Software-driven design

A computer and dedicated software are used to control the laser engraving system. The software allows you to select the shape, upload an image, and create the design to be engraved on the metal. The software then translates the design into a signal that instructs the reflector where to point the laser beam and when to do so. In this way, the laser can create complex and detailed graphic designs on metal surfaces.

Precise and permanent marking

Lasers can produce very precise marks, especially when focused on a small area. The heat generated by the laser beam penetrates the metal surface, creating a permanent mark that can last for years. In industrial settings, laser engraving provides an indelible and long-lasting method for machine part marking, product identification, and part traceability.


In short, laser engraving is a versatile technology that can create precise marks on a variety of materials, including metals. You can choose the right laser engraver or CO2 engraver for your project. By using your engraver correctly, you can engrave high precision, permanent marks on metal that will last for years.

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