A laser oxide layer appears along the cutting edge of metal parts. Before coating, welding or other surface treatments, the side of the metal part must be clean of laser oxide layers. These oxide layers occur when laser cutting with oxygen is being utilized that makes the cutting edges oxidize. Metals, especially steel, oxidize very quickly. As enormous heat is being released during cutting, the oxidation process intensifies further.

Although laser oxide layers are very hard, they are not firmly bonded to the underlying material. They can therefore come loose through slight shocks, vibrations or other mechanical methods. This applies not only to aluminum, but any other metal alloy. Removing these laser oxide layers has a positive effect on the quality, durability and functionality of metal parts. Main advantage of clear cutting edges free of laser oxide is to allow proper paint adhesion (coating) without the risk of chipping and rust.