Rodney recently posted using "Formica" as an engravable substrate. I happened upon some "matte finished" not the "glossy finished" formica at a bargain $20.00 for 30"x96" sheet.
Engraving the Tile murals as I did, I gave the formica a whirl. Also experimenting with how I did them.
I have always engraved "Laser Tile" straight as a "bmp" and not using "photograv". With the results of the tile I don't beleive photograv will give me any better results on the tile. So I thought I'd try gray scale, save to bmp and engrave as is to the formica.
These are the results of the Matte formica with boot polish finish. To me it appears as if they are a charcoal drawing, as the matte surface keeps some of the polish.