Customs: white plastic, Paint varnish, sun yellowing

Discussion in 'Creative General Discussion' started by Spiffy, May 13, 2020.

  1. Spiffy

    Spiffy Well-Known Member

    Nov 12, 2017
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    Hey guys, just wondering, if I was doing a TF custom or model that will sit in a living room rather than in a protected cabinet:

    a) Does bright white modern plastic still yellow with age and sun exposure, or was that the plastic of the past (with old chemistry formulas or something.)

    b) if plastic does still yellow, will covering it with a clear varnish (matte, satin, gloss whatever) that maintains the color, protect it from UV exposure, or will it still yellow?

    obvs, I could paint something with white paint and never have a hue change, but that seems more likely to change the character of the piece somewhat.
  2. Snaku

    Snaku Primes Don't Party

    Aug 19, 2006
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    From what I've read, it's oxidation that causes the yellowing. I'm not sure if the plastic being more modern has any effect but the quality of the plastic would seem to, so I'd say it comes down to the quality used by the manufacturer. No idea how to judge that, though.

    As for covering it, yes that should make it less likely to yellow but a lot of clear coats may also be susceptible to yellowing so you'll want to do your research before choosing one.
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