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T O P I C R E V I E Whistory in miniatureI've read some posts concerning white paint yellowing. This occurs when a clear coat is sprayed over paint that has not cured. If you spray a clear coat over uncured white paint, the gas that is released during the curing process is trapped below the surface of the clearcoat, and turns yellow.garymilgromI have some old auto models that have turned yellow too. In some the unpainted white plastic has yellowed; in some the white paint has yellowed and finally some with clear coat have yellowed. In very old models the paint has sometimes cracked - clear coat or not. I think the only way to prevent damage like this is to keep them away from UV light. I would be interested in others' experience as I now have hardwood space models that I'd like to keep from yellowing.apolloprojecktUse car paint, and UV car clear coat. Has someone see white cars turn in yellow? If you use model paint, don't put the model in bright sunlight and very important don't SMOKE in the house. Smoke is a crime for models as the nicotine will blanket on your models.ea757grrlMany friends of mine in the model-construction hobby who use hobby paints like to mix in a couple drops of blue paint to their bottles of white paint before they airbrush white coats. It isn't enough to change the color; just enough to stave off yellowing down the road. tegwilymMy plastic is turning yellow on the "wrap-around" parts of my Revell 1/96 Saturn V. The other plastic is still white. Oh well... I'll just have to get that 4D cut-away model when it's out!
If you spray a clear coat over uncured white paint, the gas that is released during the curing process is trapped below the surface of the clearcoat, and turns yellow.
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