Wanted to see what I could do with the standard pre-painted gloss white 0.040" aluminum sign blanks that I use for light-duty/novelty signs. They come pre-cut in several standard sizes from various suppliers, notable the 12"x18" size which fits darn well into the GF bed, and the 4’x8’ size, which is a slightly better value if you are set up for sheet goods… and why I have scraps to test.
The stuff I get has a protective film; Remove the Film.
GF Pro, speed 1000, passes:1 Focal Height: .04"
Top Row: power 30, LPI 225 :: power 1, LPI 225 :: power 30, LPI 75
Bottom Row: power 30, LPI 270 :: power 20, LPI 340 :: power 30, LPI 340
I’m having fun with the textures from the really low LPI settings, and I dig how the 75 LPI came out here.
Power 1 etched into the paint, but not through it. Looks matte on the otherwise glossy paint. Shown here with reflection to highlight it.
Anyway, that’s a starting point for this kind of pre-painted aluminum. YMMV.