Forget Alcad -use AK Xtreme Metal. These are enamel based metallic paints that airbrush straight from the bottle without thinning. Dries fast within minutes and can be masked over with kabuki (Tamiya type) tape. Tape removal does not lift off paint. Once dry the finish is durable and does not come off with handling. Clean airbrush with AKs own Xtreme cleaner. Highly Recommended!