What is the Difference Between Engraving, Etching and Marking?
Laser engraving, etching and marking are often used interchangeably when it comes to laser cutting. But did you know there’s actually a difference between these three terms?
What is Laser Marking?
Laser marking is done with a low-powered beam by discoloring the material to create a high-contrast without actually disrupting the material’s surface. The marking is done via oxidation under the surface causing it to turn black. It is sometimes called laser coloration or laser dark marking. It is most commonly used on metals but the charring effect can also be done on plastic materials. It is typically used for serial numbers or model codes with great application in the medical or automotive fields. Laser marking can be used on flat, curved or round surfaces.
What is Laser Engraving?
Laser engraving, on the other hand, cuts a cavity through the material’s surface leaving a cavity that reveals an image or writing at eye level that is noticeable to the touch as well. This is done with high heat laser causing the material surface to vaporize. It is very precise and is often a good option for people who want to personalize or customize something. Engraving depth can vary between 0.02″ in metals to 0.125″ in harder materials. You can engrave almost any type of material but are most commonly used for metal, plastics, wood, leather, glass and acrylic.
What is Laser Etching?
Laser etching is a subset of engraving, with the main difference being the depth of the cut. This is usually no more than 0.001″ — which makes it the most viable option for thin materials and small projects such as jewelry.
Those are the basic definitions and differences between the three terms often used for laser cutting.
In terms of Durability, Engraving is more durable than etching as it can withstand more wear and tear.
In terms of Time Taken Laser etching can be faster than Engraving.
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