This is the most common method of laser marking. The laser removes one layer of material ,exposing another layer. In most cases the result is a high contrast, crisp mark.
Pictured to the left, top to bottom: anodized aluminum, painted plastice and a multi layered label.
In this method, some material is removed, giving the mark some depth, and as a result could also leave some raised edges. The laser interacts strongly with the material. With this process, in some cases, the engraving is later backfilled or used in a molding process.
Pictured to the left, top to bottom: aluminum, gold and silicone.
Direct Laser Marking changes the color of the materials, thus
creating a contrast. Sometimes this happens naturally.
Sometimes additives are added, especially in plastics, to enhance the
In this method, no material is removed. The material changes
color. This is a very gentle, fine tuned interaction of the laser
with the material.
Generally, laser annealed parts are used in medical and other related industries where oxidation needs to be avoided due to agressive environments.
Virtually all materials can be laser engraved. By choosing the
right laser and laser settings, a large variety of different
effects can be achieved.
All laser marks are permanent.
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