Laser engraving and laser etching are unique applications of laser technology with their distinct profile requirements, benefits and characteristics.In the world of printmaking, different methods are used to come up different images from a flat surface, a hard surface and even a metal plate. With this in mind, it’s essential to update your terminology and understand the practical and technological benefits of these different laser applications. This way, you can determine what setting you should prefer for your next laser project. Here is a list of our main differences that distinguish between these laser methods.
Nature
While etching is the art of creating an image using acid that removes metal, engraving is a printing method in which an artist uses a pointed and sharp tool to cut lines on a metal surface.
Object size
The etching is suitable for small projects and thin materials. On the other hand, the engraving can be used for large materials.
Materials used
While etching is suitable for metallic materials, engraving can be applicable for materials such as stones, plastics, wood and metal.
Effect on materials
The laser engraving creates a conical depression on the material surface. Laser etching creates a high-contrast marking on the surface of the material by evaporating only the surface layer of the material.
Versatility
Laser engraving and engraving are versatile and can be used with many different materials. Laser engraving is suitable for almost any material of your choice, including metals, wood, plastics, leather, glass, acrylic and also soft materials like paper. Laser etching influences the surface of the materials changes the reflectivity and improves the contraction. The best materials for laser etching are anodized aluminum, stainless steel, coated metals, ceramics and polymers. Laser marking is widely used in the industry to come up with permanent markings without causing any damage on the materials.
Laser power
Laser engraving makes the deepest cut and vaporizes the material in its way. Effective laser engraving requires the use of a high-temperature laser, and engravers often choose the power of their laser in the maximum configuration for best results, especially when using a robust material such as anodized aluminum or stainless steel.
Although these processes are used for the same purpose, the etching and engraving process is different, each with a special process. The method to be chosen mainly depends on the type of metal to be used, the availability of expertise, the preferred result and the possibility of using a chemical or physical process.