Deep engraving entails a very similar process to that of engraving. The key different is that it requires more passes. Here, we describe two key sets of parameters:
Please note that the set of parameters used to achieve optimal quality (2) takes about three times as long to reach the same engraving depth. A 20 watt MOPA laser with F-160 lens is used in both cases. The time-optimised engraving results are displayed at the top of the image, and the quality-optimised engraving results are displayed at the bottom.