Can metal be engraved with a CO2 laser?
When laser engraving awards and trophies that are metal with CO2 lasers a special paste or spray must be applied to the workpiece and dried prior to laser engraving. The marking is burned into the metal with the laser. Once the laser has finished engraving or marking the residue of the paste or spray must be washed off. Laser engraving and marking using this process requires a lot of energy; so the laser must move at an appropriately low speed. On some metals, high contrast can be achieved using this process.
Important: Not all metals are suitable for paste or spray marking.
The necessary pastes or sprays can be costly and the process time-consuming. A fiber laser allows you to bypass this process and mark the metal directly. A distinction is made between engraving, annealing marking, and coating ablation. Speedy flexx laser machines are equipped with both a CO2 and a fiber laser, allowing the user to use both laser sources in a single job without having to manually change the laser source, lens or focus. The patented JobControl® laser software makes this possible: Simply assign the desired laser source to each colour within the graphic.