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Old 05-20-2013, 10:05 AM   #1
Rivet Master

1973 25' Tradewind
Beautiful , Oregon
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Retr0bright and Yellowing End Caps Cure All

Hi Folks,

Retr0bright for yellowing end caps and other parts seems quite interesting.
I read many posts on painting yellowing end caps and came across this method of restoring them by a bleaching process. What seems like a permanent yellow is claimed to be reversed. It seems promising but I feel if it was so good there would be much more talk about it, not only here on the site but in other areas. (I could be missing it) Please share your experience.

Is a real and viable option?

Who has used it and to what ends? Is it all that?

Here is the post:

Thanks in Advance


more on the process.

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Old 05-20-2013, 05:11 PM   #2
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I used it to whiten my lamp shades. Post 69

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Old 05-20-2013, 05:22 PM   #3
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Another treatment I've seen used is one of the spray paints formulated for plastic, such as Krylon Fusion. If you find a color that matches what you want, it's just a matter of masking EVERYTHING and you can treat the endcaps in place.

I've heard that results on tambour are iffy, because the action of the tambour scrapes paint, so that might be an issue if you have tambour the same color as the end-cap (like on my '75 Argosy) but if you have dark woodgrain tambour that you mask off or remove when you're treating the rest, it seems like it could work.

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Old 05-20-2013, 08:08 PM   #4
Rivet Master

1973 25' Tradewind
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As far as the painting the best info I can find is it comes down to the primer than all else falls into place with the top coat.

It seems to me so far that the RetroBright hasn't lit the world of de yellowing on fire. I suspect it works so it leaves me wondering.

Thanks for your responses

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Old 05-21-2013, 04:56 AM   #5
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It works. I used it on several yellowing plastic pieces. It hasn't lit the world on fire because for many people the process is to involved. They want a quick easy fix. This does the job right, but takes a couple of applications depending on how yellow the plastic is, and it can be messy applying the gel and taking it off.
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Old 05-21-2013, 06:40 PM   #6
Rivet Master

1973 25' Tradewind
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Interesting. I would think if it keeps you from painting it would be a good bargain as far as the amount of work. Proper prep for painting is a fair amount of work. Glad to hear it works.


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Old 05-21-2013, 08:03 PM   #7
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I would think that anything that bleaches plastic makes it more brittle. I have always painted the endcaps if I don't like the color.
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Old 05-21-2013, 08:05 PM   #8
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The yellowing occurs because the B (rubber part) of the ABS plastic used for these parts has degraded with age. The yellow color can be bleached out, but the plastic is permanently degraded and has lost its rubber toughness. The parts are still very susceptible to failure. Some of the yellowing can also be caused by absorption on tobacco smoke. This does not degrade the plastic.
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Old 05-21-2013, 08:26 PM   #9
Rivet Master

1973 25' Tradewind
Beautiful , Oregon
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The pictures show what my end cap looks like after some sanding. I stopped when I read about the retr0bright I was preparing to paint. I was going to TSP it afterwoods.

Still fishing for what people have successfully long-term used for primer.

I hate to do double the work correcting a mistake. Paint failure has such potential.

Thanks for the input

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