Next came the silver coats of Poly-Spray.  Two complete silver cross strokes separated by one or two days.  After each cross stroke has dried, the silver coat must be sanded to silky smoothness.  By the time we got done, the wings had at least 9 coats of Poly-Brush (pink) and Poly-Spray (silver).  The silver coat contains aluminum powder to protect the wings from ultraviolet light in sun light which can destroy the Dacron.  The whole process can take one to two weeks working full time.  The process is reasonably fun provided you keep runs to a minimum, the humidity is low enough to prevent “blush”, and the paint dries in a smooth glassy surface not orange peel or some other aberration.  Any of these problems can make for a bad day.