I used a holographic decal on a black nickel tube. I tried to keep bubbles in the aluminite to simulate underwater, by not pressurizing, just air curing in the mold. I noticed I'm getting, what looks like a slight delamination in various areas. The tubes were washed with alcohol, fine steel wooled and washed again. I think the next batch I'll put in the pressure pot. I did use Aluminite water clear to do the casting.