Advice on tacky undercoat

[twrchtrwyth]

I undercoated a plastic prepainted model and it went tacky. Any advice on how to untacky it? The model is that type of plastic toy animals are made of, the undercoat was Rust-Oleum plastic primer.

[robh]

That was very common with HaT 1/72 plastics for a while.

It will never cure of its own accord but I found that you can paint over it while tacky with an acrylic paint or varnish and once dry treat as normal. But do not later use any oil or synthetic based paint/dip or varnish otherwise it reacts again. Water based products only.

[twrchtrwyth]

Cheers.

[Daeothar]

Gotta try that myself then.

I once spraypainted a rubbery dinosaur model from the toy store with an acrylic spraycan, and it turned out really tacky. I came across it a couple of weeks ago, and it was still tacky, even though I speedbuilt it for an RPG scenario nearly 5 years ago!