Sprayed the first colour on the upper surfaces, using 'Aluminium', and not particularly happy with the result.
It's turned out patchy, with 'grainy' areas here and there, but smooth elsewhere, and a couple of areas where it's bubbled and crazed !
Now this
might be because of the matt primer coat, although this was buffed to a sheen to ensure a smooth, even surface. The 'Xtreme Metal' either didn't like the surface, or has reacted with the enamel primer, although having watched video demos, including one from AK, spraying onto primer or bare plastic should be equally successful, as long as the surface is clean.
Before spraying the model, I did some test spraying on a 'hack' model, both on bare plastic and matt painted, and there wasn't much difference, and certainly no grainy appearance, although bare plastic showed a slightly smoother finish.
Pressures were adjusted during this test, and I found that a slightly higher pressure, around 18 to 20 psi, worked best, and that a slightly heavy application, but not 'flooding' the surface, gave a smoother finish.
It's puzzling that some areas are smooth and quite shiny, whereas other areas are dull and grainy, and look like bad brush painting.
The pics show how things look so far.
Pic 1. How it looks overall. Note the smooth, shinier areas on the masking tape around the nose and intakes.
Pic 2. Grainy area, and bubbled at the wing root.
Pic 3. The worst area - heavily crazed and bubbled, which happened
immediately after spraying. Some of this has since settled back slightly, and doesn't look as bad, although far from smooth.
Pic 4. Patchy finish, with some high-shine areas, but 'flat' overall.
I'll let this first coat cure for a few hours, see if it settles down more, and then see if the worst areas can be saved, before trying a further coat.
Next time I use these paints, I think I'll leave out the primer - or go back to my old method !