Now my new technique: with the knowledge that acrylic clear varnish is the
toughest thing there is, I came to the following way to do my panels.
First I clean it, of course. Acrylics bond to metal like nothing else, so the
panel is sprayed Tamiya XF-63, dark gray. Now you can clean your airbrush.
By the time your done, the gray is dry. Here's the key point.
Spray a layer of Tamiya clear X22 Acrylic. Clean airbrush. Varnish is dry. Now
it's time to spray the gray.
Use an enamel paint. This is crucial for this technique to work.
I used Xtra x131 dark gull gray 16231, with their airbrush thinner, which speeds
up the drying time. Let it dry, so that you can touch it without leaving finger
prints. Now take a tightly woven cotton cloth, damp it with white spirit and
wipe it over the instrument bezels. You remove the grey enamel without harming
the acrylic clear. And look at that tight panel, everything that's etched in to
it is grey. I've also tried my index fingertip wetted with white spirit
and that works even better.
Experiment and see what works best for you.
Try it, you won't be disappointed.