I inverted the image but did not alter any other coloring. This is my first time using Almake so I wanted to try different powers and speeds. I did not spray with a clear coat, I left it natural. 

Image 1 is for setting 1

Image 2 is for setting 2

Since the coaster can have different thickness, I used the auto-measure feature on the canvas page.

Since the coasters have rough edges, I used the “mark process area” to set the X & Y areas I wanted the machine engraved on. Then I  double-check the area using the “framing” tab before proceeding to “go to process”

Depending on which level of engraving you prefer it will take from 10 minutes to 28 minutes to fully process. Once completed I wipe with a damp cloth to remove dust. You can use a clear coat before processing but I have not tried that yet, so not sure what it would look like.