Mirra Chrome: You will need an airbrush, preferably double-action. For projects larger than 6 x 6 inches, you should use a standard HVLP spray gun. Recommend a half- or full-mask respirator, even with small jobs. Shake before use. Mirra Chrome is an acetone/alcohol-based paint. No reducer needed.
The key to a successful mirror-like shine is with a glass smooth surface, free of dust and other imperfections. If your material does not already have a very smooth finish, the quickest way to get that is by spraying 1 coat Lightning Clear (or Mirra Clear). Let cure 1 day.
Do not wet sand: You want as smooth as possible a finish. If you must sand, buff to a glass smooth shine afterward. Before spraying the chrome paint, clean your surface of dust with air or a dry cotton/flannel cloth. A mirror shine will reveal every detail. If buffed, clean with a cloth wetted with half alcohol/water, and clean again ... ALL residue must be removed!
This paint reflects its background, unless more is sprayed, then it doesn't matter. I have found that when working with metal ON SMALL PROJECTS, it is best to strip off all the paint and clearcoat the metal: No primer. However, if you use a primer, or your surface has color other than metallic, these are the results I’ve seen:
1) Black background — Dark mirror shine, like mica. You can lighten this up with more chrome paint. NOTE: Many including Alsa say that black is the best background to begin with.
2) Silver, metallic or grey primer background — Best background for me on small projects, next to chrome itself (I have used bare metal, clearcoated). NOTE: For large jobs, use a black base, since it's easier to see the chrome go on.
3) White — Produces a high shine, but you have to use more paint than usual.
4) Other colors: You can produce a nice effect over colored backgrounds by giving them a highlight of chrome, without fully covering them.
• Over your base, spray your clear coat. The idea is to get it glass smooth. Let it cure, as indicated above. Now you are ready for the MirraChrome.
• The key is to spray very little Mirra Chrome with a high volume of air. You want to “mist” on the paint. This will result in a mirror shine with some dust left over that you can wipe off. I use a double-action Iwata Eclipse HP-BCS airbrush and have the pressure at 45-55 psi. I have used 20 psi for a HVLP paint gun (Iwata LP-H50), with the volume down. Start out with a very light mist and work your way up as you get experienced. TIP: When airbrushing small parts (less than a dime), it is possible to spray full volume, point blank and get a mirror shine.
• Keep spraying back and forth until you see the mirror reflection from the paint. If you spray too heavily the finish will look dull and you may have to start over. Wait at least 30 minutes (I wait a full day) before very lightly brushing off the excess paint dust with a cloth, like a cotton T-shirt. If you happen to rub off the paint, just airbrush some more on.