Download the engraving files and adjust the artwork accordingly.
Once you have modified the artwork to your liking, it's time to engrave. Insert the material in the laser. If you're concerned about placement, you can draw a vector box around your design and run the machine with the red dot pointer on and lid open to ensure your engraving/cut lines line up correctly.
Once you're satisfied with the placement, send the job to the laser and press go! Clean off your engraved slate coaster with a damp cloth.