Barcodes and logos are marked on bare aluminum using the CO2 laser. Before marking, existing coatings must be removed and the aluminum cleaned with denatured alcohol.
One cleaned, a thin layer of Cermark is applied, and the laser is then run over the top. After, the excess coating is washed off and a crisp, black marking remains permanently bonded to the metal.
In this example, aluminum was used and the laser was run at 100% power, 15% speed.
Metal marking with a laser can be done on many bare metals, even with the CO2 laser.
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