I think I discovered a new way to de-yellow plastic!

Discussion in 'Repair, Restoration, Conservation and Preservation' started by FireAza, Sep 2, 2013.

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  1. Helder

    Helder Site Supporter 2014,2015

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    How about trying this out on the yellowed SNES sytems?
     
    Helder, Sep 18, 2013 Report
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  2. ASSEMbler

    ASSEMbler Administrator Staff Member

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    I would suggest a submersible heater, or lacking one cover it in black plastic garbage bag (bucket and all) and put it in the sun. Then, when it's suitably white, perhaps seal it so it won't yellow again.
     
    ASSEMbler, Sep 18, 2013 Report
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  3. FireAza

    FireAza Shake! Shake!

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    I like your idea of a bucket in a black garbage bag! I'll give that a shot.

    As to sealing them to prevent yellowing, the CD-ROM2 on the previous page was Retr0brited and sealed and I could swear it wasn't that yellow before I sealed it.

    I don't currently have any yellowed SNESs, but I do have a yellowed PC Engine that will make a good test subject!
     
    Last edited: Sep 19, 2013
    FireAza, Sep 19, 2013 Report
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  4. FireAza

    FireAza Shake! Shake!

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    Okay, I've continued the experiment! I've tested the "inside a black garbage bag in the hot sun" method on another PC Engine shell, giving it a week of treatment and it works great! Results seem to be a little better than the week in cold water I did last time and it also got results faster.

    Here's a comparison, I shouldn't need to tell you which half was treated and which was not :p
    [​IMG]

    Look good to you guys?
     
    Last edited: Sep 30, 2013
    FireAza, Sep 30, 2013 Report
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  5. FireAza

    FireAza Shake! Shake!

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    I've continued the experiment, this time with something non PC Engine, a slightly yellowed PlayStation. For some reason, it was completely unaffected! It came out just as yellowed as when I put it in! Wonder why this is?
     
    Last edited: Oct 23, 2013
    FireAza, Oct 23, 2013 Report
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  6. Mystical

    Mystical Resolute Member

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    possibly a different kind of plastic?
     
    Mystical, Oct 23, 2013 Report
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  7. FireAza

    FireAza Shake! Shake!

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    Retr0brite works on all kinds if plastic though, I would have thought this would as well. I also notice that a PC Engine I had Retr0brited and sealed has started to yellow, while a Super Nintendo I did the same to still looks the same, wonder if this is related?
     
    FireAza, Oct 23, 2013 Report
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  8. Tripredacus

    Tripredacus Peppy Member

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    Have you noticed that most SNES that turn yellow, only one part of the shell gets the discoloration? It turns out in the SNES case peices that discolor have some chemical in them, as per this:
    http://www.vintagecomputing.com/index.php/archives/189
     
    Tripredacus, Oct 23, 2013 Report
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  9. existensmaximum

    existensmaximum Member

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    Did you only use Napisan here?
     
    existensmaximum, Mar 17, 2014 Report
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