Created 6 different images designed to be engraved onto slate coasters. images were all processed in Imag-R as banning slate and 318 dpi. Did not use one touch or any further image adjustments.
xcs file is attached with rock coaster setting of 25P, 180S 120LPC based on S1 40 Watt laser. With these settings, takes approximately 11-13 minutes for each coaster.