I know an award wining LARGE-SCALE modeler named Roy Vaillancourt who uses latex paints on his models. He uses Benjamin Moore paints, both "Semigloss" and "High Gloss" versions and then uses automotive waxes or furniture polish for more shine. He has two tricks: 1.) He uses windshield washer fluid as the thinner, and 2.) a product called "FLOE-TROLL" at no more than 8 oz. to a gallon of paint. He puts on three coats; first coat is "barely enough to see coverage", let dry, second coat is "just a bit wetter", let dry again, and then a third coat. He does spray the latex on but tests it first to arrive at the proper mix of paint and thinner, "dry looking", add more thinner, "runny", too much thinner. He does tend to use a hair dryer to speed up the drying time between coats which probably isn't practical on large surfaces. He sun-dries the final painted surfaces for a day or two to help finish drying.
As for UV protection, isn't that supposed to be in the filler/primer? Allen G. Wiesner KR-2SS/TD S/N 1118 65 Franklin Street Ansonia, CT 06401-1240 (203) 732-0508 flash...@usadatanet.net