I am currently engraving on clear acrylic using Tempera paint as a mask.  It worked well, however, the I would like the engraving to be a bit more “pronounced”/visible. These are for the LED lighted from below signs. Currently the power is at 40% speed at 400mm/s and 200 lines /cm. Problem is that right now I do not have a lot of material to test with so a suggestion on what to increase to deepen the engraving would be great. xTool S1 20W. Thank You