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Showing results for tags 'Reaction with paint?'.
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Greetings! I'm building R - G's new 1970 Beetle convertible kit, in 1/24th scale, for a family friend. Came out last year. Nice kit and fits well. Really well. But I have a problem: My usual paints, mostly automotive grade since I work with them every day, is behaving strangely on their plastic. I use Design Master primer as the prime / base coat, with either catalysed enamel or lacquer over it. Sometimes I use a similar high-build primer from the automotive world. Either one sticks, normally, to polystyrene really well and prevents the plastic from crazing or wrinkling regardless of the top coat. Here's what is happening: The lacquer I chose for the body is splitting and curling up, lifting the primer with it, so far in sharp inside corners. One of the catalysed paints isn't curing; it's gone gummy and sticky, over the same primers. As a control, I've tried these paints on other brands' plastics and there's no problem at all. Also, my welder of choice, Ambroid Pro Weld, doesn't behave quite the same. It doesn't soften the plastic nearly as much. Has anyone had any issues? I've cleaned the parts very well so mold release agents can't be a contributor, and the primers seem to cure hard. Odd.
