The pinhole killer! Waterborne polyurethane primer plus UV blocker applied with a foam roller or spray gun. Fills pinholes in layups or molded parts. White color. Once UV Smooth Prime has dried for 7 days, spray white two-part catalyzed Epoxy Primer to seal the surface and provide moisture and chemical resistance prior to spraying top coat paint. Dry sand for a smooth, pinhole-free surface. Dries in 20 minutes, sand in two hours. Clean up with water. Use Poly-Fiber Gun Cleaner to clean your spray gun after each day's spraying. NON-HAZMAT. Three gallons required for most composite aircraft.

Note: Crosslinking no longer requiered

Important Notice: All mixed paints are special order and are non-returnable

Is Smooth Prime thinned or diluted with anything?
Per the manufacturer: No, it is not thinned or diluted.