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Restore Yellowed Plastic

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  • #61
    Mine got pretty warm in the sun, the decals didn't lift, depends on what they are made of I guess. I did get cloudy marks on the plastic tho so it wasn't a great success.
    Sic transit gloria Atari!

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    • #62
      Originally posted by Womble View Post
      Mine got pretty warm in the sun, the decals didn't lift, depends on what they are made of I guess. I did get cloudy marks on the plastic tho so it wasn't a great success.
      Hmmm I don't know what is worse - yellowed or cloudy? I'm going to test it on a yellowed broken plastic with no decal, just to see the result.

      Cheers,
      Matthew

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      • #63
        I took the punt using a yellowed plastic off my WCS machine. I applied the peroxide to both sides of the plastic, wrapped the plastic in glad wrap and put it outside in the sunshine (it was 38 degrees yesterday) for 5 hours. After removing the glad wrap, I was pleased to see that the plastic was considerably more clear than yellow. I am planning to do one more application and hopefully that will be enough, unfortunately I can't do it today because it is overcast and blowing a gale, and it is threatening to rain.

        Anyway, here are some "before" photos:



        After:





        These 2 photos show the before and after shots of a slingshot plastic that was soaked in household bleach for a week - the result is a yellow, cloudy plastic



        Cheers,
        Matthew

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        • #64
          I applied the peroxide to the plastic again today and left it in the sun for about 6 hours. I am pleased with the result, it's good enough to put back on the machine. Anyway, here is the result:




          Cheers,
          Matthew

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          • #65
            I was just wondering, do I need to flip the clear plastic over so that both sides of the plastic have had direct sunlight for 6 hours? I hope that makes sense.

            Matthew

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            • #66
              How would you go with plastics that have artwork on them?
              You would probably have to be careful not to fade the artwork.

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              • #67
                Originally posted by Boots View Post
                How would you go with plastics that have artwork on them?
                You would probably have to be careful not to fade the artwork.
                This is something I am concerned about, I was thinking of wrapping the part of the plastic covered by a decal in a rag and only have the yellowed plastic exposed to the sun. I have a plastic with a decal that I am going to try it out on, hopefully it will work.

                ===================

                Anyway, I decided to apply the peroxide to the plastic again and left it in the sun for about 16 hours (8 hours per side). I think this is the best that I can get it - far better than it was before I started. Anyway, here is the result:




                Cheers,
                Matthew

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                • #68
                  Really happy with the results of my C64. Top is just as the bleach was applied, bottom is just after hosing it off.



                  This is after only 3 hours, don't think I need to do another application as it looks like the original colour to me. If you look carefully at the top picture just to the right of where the F7 key would sit, you will notice a lighter coloured square which is where a sticker used to be that I cleaned off, am guessing that was its original colour.
                  SEGA love: | Nintendo love:
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                  • #69
                    These results are very promising, I have a yellowed GC keyboard controller that I'm hesitant to try, I don't want to destroy the lettering on the keys though :S

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                    • #70
                      Just did a C64C top case today. Forgot to take a before picture but damn its probably the best results I have gotten so far. Now the keys really look crap and need to be done also. Need to wait for the next time there is some sunlight here in Melbourne

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                      • #71
                        Grabbed an Atari 1040 STFM from eBay. Very happy with what I paid for the complete system. It was a bit yellow so decided to do some Retrobrighting of the case and keys.
                        I just used some cream peroxide and also mixed a tablespoon of Oxywash detergent from Aldi's.
                        6 hours later and she is looking pretty good. Should have done the bottom of the case also cause now it really stands out.







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                        • #72
                          Great result. I still haven't got anything to try this on.
                          Hindsight is always in high definition!

                          C64anabalt: 9647m

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                          • #73
                            amazing! what is the peroxide cream and oxywash and where can you get them?

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                            • #74
                              Peroxide cream you can get from hair dresser suppliers.
                              I got mine from Glamco

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                              • #75
                                Originally posted by extra_anchovy View Post
                                amazing! what is the peroxide cream and oxywash and where can you get them?
                                A friend of mine is a beautician and organised it for me. I am sure you can just get it from somewhere like hairhouse warehouse.
                                Oxywash was just from Aldi's

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