Restoring a foggy headlight - GIF

Restoring a foggy headlight.

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Previously:

https://www.homemadetools.net/forum/...214#post130568
https://www.homemadetools.net/forum/...601#post223010
https://www.homemadetools.net/forum/...824#post156221
https://www.homemadetools.net/forum/...430#post177512
https://www.homemadetools.net/forum/...467#post212110

Life was so much simpler when we ran sealed beams

I still have a Hoppy Headlight Aimer and two vehicles I can use them on...

Quote:

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Originally Posted by IntheGroove

I still have a Hoppy Headlight Aimer and two vehicles I can use them on...

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My dad and I had a Bear headlight tester, Aim 2inches down at 20 feet the right headlight 1inch to the right at 20 feet, the left 1.5 inches to the right at 20 feet, and
cars with 4 headlights the high beams 1 inch down same aiming to the right to pass the 1960s era Texas state safety insp

Novus Polishing Compound #2 works wonders on foggy headlights and you don't even have to take them off the car. I've restored many using this product. It's not made specifically for headlights, but it works well on them.

Quote:

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Originally Posted by nova_robotics

Novus Polishing Compound #2 works wonders on foggy headlights and you don't even have to take them off the car. I've restored many using this product. It's not made specifically for headlights, but it works well on them.

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Tooth paste works just as well but use as very low grit not Crest extra whitening for finishing

Most plastic headlights need sealing after polishing to prevent any micro cracks present propagating, and to increase UV aging resistance, the supplied kit clear sealing coat didn't set on the last set I did, so I had to re-polish it off and use clear Gorilla tape to seal and protect, that was 3 years ago and the headlights are still clear.

Don't know why he didn't just order the $5 kit? Nice head of hair though!

Quote:

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Originally Posted by NeiljohnUK

Most plastic headlights need sealing after polishing to prevent any micro cracks present propagating, and to increase UV aging resistance

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Is there a sealing product you'd recommend? I wet sanded and polished a minivan's headlights and they re-fogged surprisingly quickly. It took less than a year before it was noticeably opaque again. I assume it's the UV protection has all given up in them. Is that right?

Clear Gorilla tape after repolishing worked for me, if you can find a plastic compatible UV resistant lacquer like UPOL that'd probably do, though that might not be a local product as I'm in the UK.