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retrobright

Hints and tips for vintage technology repair and restoration
 
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retrobright

Post by rob t » Fri Oct 25, 2013 11:15 am

Has anyone heard of this or even tried making and using it ? (a process for making yellowed plastic white again )
http://retr0bright.wikispaces.com/
Rob T

 
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Re: retrobright

Post by Refugee » Fri Oct 25, 2013 1:00 pm

I have heard of it being used on telephones.

 
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Re: retrobright

Post by Framer Dave » Fri Oct 25, 2013 1:18 pm

I wonder if it would work on plastics other than ABS, for example TR82 dials?

 
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Re: retrobright

Post by Refugee » Fri Oct 25, 2013 1:43 pm

TR82 dials look like polystyrene and may respond differently or may even go milky.
I would test it on something like a throwaway camera lens before committing a TR82 dial to it.

 
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Re: retrobright

Post by Niall » Fri Oct 25, 2013 2:33 pm

I saw a fairly long thread about this a while ago on another forum. Results seemed to vary, there was a risk of ruining the finish and some people found the effect was temporary i.e. the yellow came back after some time.

 
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Re: retrobright

Post by Refugee » Fri Oct 25, 2013 4:54 pm

It almost certainly makes the surface porous when it takes off the discoloured surface.
Perhaps it would work if it were followed up with some kind of wax polish afterwards.
I would not like to try it with optical plastic of any kind without a lot more testing.

 
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Re: retrobright

Post by Wage Slave » Thu Dec 12, 2013 3:40 pm

I treated some bathroom tap handles using sunlight, which is pretty strong here. It worked fine but yes, the yellowing will return unless you put whatever you treated away from all UV light.


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