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Main => Everything Else => Topic started by: DYNAGOD on September 07, 2004, 02:48:00 pm

Title: whiten yellowing plastic
Post by: DYNAGOD on September 07, 2004, 02:48:00 pm

Does anyone know any magic tricks to help whiten yellowed white plastic?
Ive read that bleach actually yellows plastic so i dont want to go there.
is the yellowing only surface deep or does the entire substrate turn yellow throughout with age.
thanks all!

Title: Re:whiten yellowing plastic
Post by: whammoed on September 07, 2004, 02:56:14 pm

I have a white outdoor plastic clock that turns yellow from the sun and weather.  It is only surface discoloration.  I have buffed it out with rubbing compound.  Plastic polish would probably be better if you are worried about leaving scratches behind.

Title: Re:whiten yellowing plastic
Post by: DYNAGOD on September 07, 2004, 03:05:20 pm

thought novus might work, was curious if there was any secret tribal knowledge thing like ,i dont know, vinegar or some other odd thing that might work without buying anything. :P

Title: Re:whiten yellowing plastic
Post by: whammoed on September 07, 2004, 03:19:18 pm

Well, if its really light superficial staining, car wax/polish will take it out.  Most people have that in their garage.

Title: Re:whiten yellowing plastic
Post by: rchadd on September 07, 2004, 05:02:49 pm

toothpaste?

Title: Re:whiten yellowing plastic
Post by: Geekboy on September 07, 2004, 10:53:33 pm

I have an old intercom system throughout my house.  It is white plastic that had yellowed.  I just got some white Krylon Fusion spray paint.  It worked like a charm.  Intercoms look brand new.