Why does spray paint sometimes come up off the painted surface when the surface has been primed?
I was making something to hang up on my wall, a thin metal logo of the skullcandy skull. the peice of metal was free of rust. So I primed the surface and let it dry. spray painted it and then the paint was going crusty-ish and was peeling of the metal.
I don't have a picture now, but i will upload a picture later.