For my first attempt at glass engraving using the xTool F1 Ultra, I applied a fine, even coat of Brilliance Ceramic and Glass Black Marking Spray onto a clean glass surface. After allowing it to dry for about five minutes, I carefully set up my design in xTool Creative Space (XCS), using a beautiful monogram font I downloaded from Creative Fabrica. I rotated the design as needed and framed it precisely on the glass. I chose the blue diode laser for this project, with the following settings: power at 30%, speed at 102 mm/s, and line interval (LPI) at 120, using just one pass. Took 1.33min only.  After the engraving was complete, I gently washed the glass with warm water and dish soap to remove the spray.   Setting pic also attached