Single layer metallics - no separate clear lacquer
Apply two or three coats of prepared mixture until the repaired areas, etc., are blanked out. By their nature single layer metallics are fairly transparent. The results will probably look stripey or blotchy due to flotation of the aluminium particles - for a nice even finish proceed as follows:
Thin the remaining paint mixture a little further than previously, about an extra 5-10% thinners only. (Not activator if using 2-pack) Once the previous coat has been left to flash off (but not dry), usually about 10mins depending on thinners, apply two or three lighter coats with the gun held a few inches further away from the panel, with very little flash-off time between. These coats should give an even metallic surface, whilst still being able to soak in to the previous layers, giving a smooth surface
If using cellulose paints, don't be tempted to apply a finishing coat of clear cellulose or blending clear, as they do not "weather" at all well. This limitation does not apply to acrylic or two-pack lacquers
Do not wet the surface with thinned paint, otherwise blotches will reappear or it could sag. The surface when dry will be slightly matt, particularly if cellulose paint was used, but should be smooth enough to compound to a good gloss. (Single layer metallics do not have the full deep gloss of a lacquered finish) Do not compound or cut back heavily with single-layer metallics, as over-use of compound or abrasive polishes will bite in to the aluminium flakes in the paint, leaving a "greyed" effect which can not be removed by further polishing.
