121 SPRAYING THINNER
Pettit 121 Spraying Thinner is a fast-evaporating thinner used to reduce standard Pettit enamels and undercoaters for spray application. The thinner flashes out rapidly and allows a sprayman to apply a light tack coat followed by a double spray coat.
Thin the paint about 10% to 20% and mix thoroughly. For better calculation of the proper spray viscosity, the reduced paint can be checked with a viscosity cup. Enamels should be thinned to about 20 to 25 seconds viscosity in a #2 Zahn cup.
Pettit manufactures a wide array of thinners to compliment our various coating products. The Thinners are matched to the product, method of application and atmospheric conditions present at the time of application. When application temperatures are high (80°F and above) slow thinners are recommended to improve brushability and flow of the product. Generally, faster evaporating thinners are utilized for spray work to maximize atomization while mini mizing the chances for runs and sags. Faster evaporting thinners are also useful for brush and roller work at lower temperatures (60°F and below) since there is less chance of these thinners becoming trapped under the drying paint film causing blistering at a later date.
Never overthin a varnish, enamel, undercoat, primer or other paint product. Doing so could lead to reduced gloss upon drying or a reduction in the performance of a product. Always follow the thinning instructions given on the label or technical data sheet for the specific product being applied.
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