Quote:
Originally Posted by clf
It is the old lacquer that breaks down, if you look at some 'failed' lights whilst you are out and about, you will see that feathering, and yellowing around the edges of it. Although in saying that, the polycarbonate will, I have no doubt, break down once exposed to the elements and driving in traffic.
When rubbing it down, try to use a flexible pad behind the sanding media, and not use fingers. As you lean into the paper to rub it down, you could rub fine grooves into the surface of the lens/remaining lacquer. Maybe light rubbing down the fresh lacquer with 3200 wet wet and dry, between coats will allow a decent quality build.
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Thanks for that, it confirms all that I thought, but always good to get a second opinion.
I did actually buy a kit a few months ago, just to test, but I didn't have much faith in what they supplied as the means of protection of the lens once done. It was some stuff in a small sachet, probably the Rainex type substance you mention.
I have come across out door lighting fittings before, which use polycarbonate lenses - they do all go the same way as our headlights if out in the weather. Their big selling point, was their near indestructability.