Engrave & Mark Metals with CO2 or Fiber Lasers?
The best tool for productive and quality metal marking is easily the fiber laser. There is no pre- or post-processing involved and the marking result is always uniform and precise, even for fine details.
Uncoated metals can only be marked with a CO2 laser machine with the use of laser marking solutions, like pastes and sprays. This must be applied to the workpiece prior to the laser process. It needs to dry completely so it can thus be burned into the material. Then, once the laser process is over, the leftover paste needs to be carefully washed off.
Marking sensitive surfaces, like expensive workpieces or unique pieces from customers, can become somewhat risky when using engraving consumables likes engraving pastes and sprays. Marking solutions are also technically classified as hazardous materials. Henceforth, the corresponding safety regulations must always be adhered to when using these products.