Laser marking is a focused laser beam producing very specific amounts of heat at the work surface. The heat superficially anneals just microns of the part surface causing it to darken. By changing the amount of energy at the work surface, etching or deep engraving is easily accomplished. With technology today we can create text, logos, barcodes, serial numbers, even photos in minutes. Another added bonus is we never have to clean the part after laser marking, contoured shapes are no problem, we achieve very small marks in hard to see places and everything is clean, clear and repeatable to high quality standards.
Some time ago before lasers, the only way to achieve a mark was by physical engraving, letter punching, electro-chemical or acid etching, and various methods of painting. They worked and many of those methods are still in use today however, they each had obstacles to overcome. Some obstacles like contours made it difficult to for paints or letter punching. Although chemical etching would work it was expensive and time consuming to purchase, and then let’s hope it doesn’t rust from the etching solution or neutralizer. The costs, production time, and headache stories go on and on.
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