Steve,
Happy Holidays my friend. While I don't post very often these days on your incredible build, I do follow it through everyone of your updates.
Being a full time race car/classic road car modeler for the past several years, gloss finishes both for final appearance and for the decaling stage is super critical. Many of my techniques I've learned, adopted, or just plain stolen from Paul Budzik, so you can be sure that they do indeed work.
a smooth painted surface for decaling starts with the raw plastic, so prep work is super important. It's like the foundation of a house. All the various stages of the paint process are air brushed in lite, even coats.
Primer which is Mr. Color 1,500 Grey or Black is 1st, thinned 50:50 with their self leveling thinner which is just a retarder that is added. Like you, my flow rate is between 14-20 psi. I never stop a pass nor even slow down. Just add coats 3 min apart till I've got what I like. I let this dry and cure for 24 hrs. Then a lite polishing with 3,000 grit. It's now smooth as silk, which is the goal.
Up next is my color coats. I generally use pre-thinned paints by Gravity or Zero, but I've used Mr. Color or even Tamiya that I've thinned 2 parts paint to 3 parts thinner, which is applied exactly as the primer was. Any Orange Peel or imperfections is rubbed out with 6,000, 8,000, & 12,000 Micro papers or pads. Again, smooth as silk.
Now I decal right over the paint without any clear gloss coat as none is needed. Since you've knocked down any peaks, buffed out the valleys, there is no silvering nor flash.
Clearcoat for blending in the decal to the paint as usual.
As for Gloss colors, for smaller areas just thin lite coats same as always. Gloss paints take longer to setup, so go 5 min between coats.
Here's just two examples of that technique.
Joel
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