So i have run out some slate coasters and noticed some “specks of dirt” around engravings. Tried wiping, doesn’t come off. Took a magnifying lens for a closer look - laser is leaving stray pulses around objects. Only around objects, no spits in wide blank spaces. Always near edges of text or graphics and inside objects with blank spaces in them.
Engraving is plain fill, not photo, so no halftoning comes into play here. Checked previews in LB (0.9.11 and 0.9.16) - no pulses there… Engraving was run on LB 0.9.11.
The run was at 15% power, 400mmps speed and 0.1 interval.
80W CDWG tube, Zye MYJG 100W psu, RDC6442s controller.