Yellowed resins query
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  1. #1
    Member sodamonkey's Avatar
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    Yellowed resins query

    I won an old DW-5600SG-7VT the other day which has jelly resin. Like usual it's yellowed over time, but it is all the same colour at least.

    I seem to remember a thread on here once where the OP said they'd managed to lighten the yellowing on their resin?

    I know it will never go back to it's original white colour, but was just wondering if anyone knew if it was possible to do this or not?

    Also if I did try it, would it affect the G-Lide logos on the strap and bezel?

    Here are the seller's pics:

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  2. #2
    Member Joakim Agren's Avatar
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    Re: Yellowed resins query

    Yellowing of jelly resin is caused by a combination of UV light breaking the surface bond between the 2 different kind of plastics that are blended in G-Shock resin Polyethylene and Urethane. This leaves molecular gaps allowing oxygen molecules to come in and oxidize the material causing it to yellow or darken. You can use some oxidizing chemicals like Chlorine or strong Hydrogen peroxide solutions on hard plastic surfaces to restore some of this yellowing. But unfortunately G-Shock resin is soft and the Urethane part of it is chemically resistant so this have very little effect on the resin. Only viable solution is just to dye the watch using RIT or Dylon dye in your case perhaps a orange jelly color could be a solution to save it...
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    Re: Yellowed resins query

    Joakim is right, the only choice is to dye it or leave it.

    I dyed a similar jelly colour to yours from this.............











    To this......................








































    I left this Frog though as it turned into quite an original colour rather than the pee yellow that is common when the resin changes.











































    Mitch

  4. #4
    Member Joakim Agren's Avatar
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    Re: Yellowed resins query

    Quote Originally Posted by Mitch100 View Post
    Joakim is right, the only choice is to dye it or leave it.

    I dyed a similar jelly colour to yours from this.............











    To this......................








































    I left this Frog though as it turned into quite an original colour rather than the pee yellow that is common when the resin changes.











































    Mitch
    Mitch speaking of jelly, how are my good old friend the red jelly Fifa doing? Is it still in good condition or has it started do darken?
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    Re: Yellowed resins query

    Quote Originally Posted by Joakim Agren View Post
    Mitch speaking of jelly, how are my good old friend the red jelly Fifa doing? Is it still in good condition or has it started do darken?

    Still going strong Joakim. It is unchanged. I don't wear it much and the rest of the time it just sits in its box. No UV to alter it. I think Red Jelly is far more resistant to change than clear anyway.

    I love a bit of Red Jelly!






































































    Mitch

  6. #6
    Member sodamonkey's Avatar
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    Re: Yellowed resins query

    Quote Originally Posted by Mitch100 View Post
    Joakim is right, the only choice is to dye it or leave it.

    I dyed a similar jelly colour to yours from this.............











    To this......................








































    I left this Frog though as it turned into quite an original colour rather than the pee yellow that is common when the resin changes.











































    Mitch
    Thanks for the photos Mitch. I might try a blue, it would look pretty good against the silver of the face of mine.

    Do you think the dyeing would change the colour of the, (at the moment), white logos on the bezel and strap??

    Sent from my SM-G930F using Tapatalk
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    Re: Yellowed resins query

    Quote Originally Posted by sodamonkey View Post
    Thanks for the photos Mitch. I might try a blue, it would look pretty good against the silver of the face of mine.

    Do you think the dyeing would change the colour of the, (at the moment), white logos on the bezel and strap??

    Sent from my SM-G930F using Tapatalk

    Well I don't know about the strap but you can always repaint the bezel in white. I repainted mine from black to white as it suited the new blue colour better.





    Mitch
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  8. #8
    Member sodamonkey's Avatar
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    Re: Yellowed resins query

    Quote Originally Posted by Mitch100 View Post
    Well I don't know about the strap but you can always repaint the bezel in white. I repainted mine from black to white as it suited the new blue colour better.





    Mitch
    Cheers, I'll have a think about it. The colour isn't so bad as it is I suppose.

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  9. #9
    Member soulbridgemedia's Avatar
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    Re: Yellowed resins query

    try "sea glow" cleaner. sneakerheads use it to "ice" up the clear soled kicks. havent tried it myself but worth a shot.
    even some peroxide and a bit of sunlight could work.

    for dying, tho, if you want blue go the light blue rit, the regular blue is pretty dark. yes it will change the colour of the text on the band (its DYE!) but it will be lighter than the band and if you give it a little scrub straight after dying you might be able to get some of it off to get it closer to white. you could also try raising that section of the band slightly out of the dye water, only just so the surrounding bits still get the dye but that could be enough for it to resist the dye a little easier.

    also remember when using lighter colour dyes, the current yellow colour of the resin will influence the final colour, ie. youre mixing colours, not "painting" over the top.
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    Re: Yellowed resins query

    for those with yellowed GW200 series Frogman, several different places, including Tiktox in the UK and ebay have brand new clear GW225e-7 jelly band/bezels sets for sale...FOR CHEAP too....like $68 shipped

    ORIGINAL CASIO G-SHOCK FROGMAN BAND & BEZEL for GW225E-7 GW-225E-7, CLEAR JELLY
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