Vertical grain Western Redcedar, sandblasted. Porter acrylic paints.
I use a 30* V-bit set to .030" depth to cut my sandmask on the CNC ( profile, on line) . Hartco sandmask is .025" when new , but the glue expands a bit with age & humidity.
This is going on a lakeside cottage abuot 2 miles from here .........