MP-57 Masterpiece Skyfire Soars Supreme

[danny-boy]

So in my experience, you need to block out ALL sunlight, because even indirect ambient natural sunlight that gets into the room can still yellow plastic. It should be blocked out so well that if you walk into the room in the middle of a sunny day with the lights off, it should be pitch dark as if it's midnight. This is what I had achieved except for that tiny top corner, but that little corner with just a limited amount of soft ambient sunlight was still enough to cause damage! You've gotta treat your toys as if they're even more heliophobic than vampires!

Thanks for the detailed info. I had no idea. This makes me even more nervous for MP-57 Skyfire but I know now I’ll need to take the necessary precautions to avoid yellowing.