The parts were marked using a 10-watt q-switched ytterbium fiber laser marking machine with a 160 mm focal length lens. The parts were surface etched, to create brightly contrasting marks. The codes read well in the lab, although the reader used in the lab is intended for larger areas, making it difficult to read codes that were not marked on a dark background. A reader that focuses on a small area may be necessary to read these codes well. The parts were marked at 15 inches per second using 3 watts of power with a frequency of 35 kHz.

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