Polishing Headlamps

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nickkeyser
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Polishing Headlamps

Post by nickkeyser » Fri May 16, 2014 1:41 pm

Not relevant to any scimmy headlamps, but suitable for scimi rear lamps etc. The lights on my S2000 where sligtly yellowed and had lost a bit of their shine - nowhere near as bad as I have seen but wanted to polish them up. This discoulouring and crazing is in the very top layer of the plastic, and needs removing.

Before;
Image

Image

Masked and then rubbed down with wet 2000 grit wet and dry. It's slow, but doesnt leave any hard scratches. The water comes off with a yellow hue to it to start with, but as you get through the top layer it eventually ends up coming off like milk;
Image

Lastly I polished them back up with T Cut, then autoglym high resin polish;
Image

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Re: Polishing Headlamps

Post by Chgperformance » Fri May 16, 2014 1:46 pm

I like that a lot :D



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Re: Polishing Headlamps

Post by CNHSS1 » Fri May 16, 2014 1:48 pm

I did a similar thing with the rear lenses on my SST. After it was resprayed and the paint was mega shiny, the number plates and and taillights looked 'dull'. I CBA doing the plates so bought new, but a few mins with farecla G10 and a wet machine polishing mop and the tail lamp lenses came up like new (weren't discoloured, just dull).

in the past ive run ss1 F&R indicators and taillight lenses through the dishwasher (don't tell Claire ;-) )and then done the same, does lift the look of the car


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Re: Polishing Headlamps

Post by Roger Pennington » Fri May 16, 2014 1:52 pm

In the photos it doesn't actually look too bad "before", until you see the "after", and that's a really big improvement! :D

As an alternative or addition to T-cut in the polishing stage, I've found the plastic polish that I bought from RR to do the SS1 rear window, is pretty good on plastic light lenses too. :)


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Re: Polishing Headlamps

Post by philhoward » Fri May 16, 2014 2:01 pm

Brasso....


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Re: Polishing Headlamps

Post by nickkeyser » Fri May 16, 2014 2:01 pm

The discolouring was mainly on the top edge, and wasnt bad at all, but was noticeably yellow in sunlight. Well worth the hour or so it too, and a couple of ££s of wet n' dry.

A better cutting compoud would be better, but I only had T cut and it did the job. I will probably revisit them in a couple of places as theres still a few stone chips that need to be polished out.

Ideally they need a UV protection putting on after or they can start to go again, but much quicker as aparently I will have removed the factory treatment.

The photos also highlight that the front bumpers a slightly different shade of silver, and not quite fitted right. Its only done 38k but its had both bumpers repainted. Otherwise its pretty spotless.

Craig - washer bottles come up really nicely in the dishwasher too! Sorting the lenses takes years off the look.


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Re: Polishing Headlamps

Post by Nickandkarren » Mon May 19, 2014 10:56 am

awesome, My old JSPEC supra had plastic headlights and they did the same but most of the yellowing was from the inside. PLastic X (cant recall the manufacturer) is really good for that sort of thing and not as brutal as T cut.



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Re: Polishing Headlamps

Post by Roxyone » Mon May 19, 2014 11:04 am

Yes Phill , Brasso/Duraglit wadding works a treat with all kinds of plastic.


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Re: Polishing Headlamps

Post by nickkeyser » Mon Mar 09, 2015 1:55 pm

Anyone got any suggestions for what to protect them with?

My understanding is that they have some kind of factory treatment that is removed during the process, and leaves them a little more susceptible to UV. Whilst washing the S2000 at the weekend I noticed the yellowing may be starting to return, albeit very slightly.

It wouldn't take long to cut them back again, but was wondering if there is a good UV protector I should be using.


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Re: Polishing Headlamps

Post by PoshTwit » Mon Mar 09, 2015 3:36 pm

Hi Nick,

Any of the long-life glass sealants would be OK (G-Techniq G1, CarPro Flyby Forte) otherwise some general sealant products are good on glass for example Chemical Guys JetSeal 109.

To be frank any sealant will work, but I would err toward the more durable products if I were you.

Rich


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Re: Polishing Headlamps

Post by windy » Mon Mar 09, 2015 3:38 pm

nickkeyser wrote:Anyone got any suggestions for what to protect them with? .
Something like this?
http://www.ebay.co.uk/itm/303-Aerospace ... 2581c2d287



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Re: Polishing Headlamps

Post by 747PETE » Mon Mar 09, 2015 4:01 pm

I did this to the headlights on my Passat just 3 weeks ago.I bought a velcro circular pad for a driil and some 4000/2000/1000 grit velcro sheets from Axminster tools.I cut the sheets to fit the drill pad,masked up the lights,water spray from hand sprayer,all done in 15 minutes :D and lights as good as new.There is no need to buy the expensive kits from Halfords and they are pretty hopeless anyway!
http://www.axminster.co.uk/mirka-abralon-finishing-pads ....VERY good quality
http://www.axminster.co.uk/flexipads-sanding-pads

Just a note,you need to flat the whole lens until its matt then bring the transparency back........it looks as if you as if you have ruined it at first:shock: ,but don't fret it very quickly comes back :D



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Re: Polishing Headlamps

Post by Nick » Mon Mar 09, 2015 4:29 pm

Advice from Craig on polishing.... :shock:


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Re: Polishing Headlamps

Post by CNHSS1 » Mon Mar 09, 2015 9:58 pm

Sssshhh, not everyone realises just how multi talented i am Nick ;-)


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Re: Polishing Headlamps

Post by Elizabeth's dad » Mon Mar 09, 2015 10:06 pm

The plastic headlamp covers on the Sera need polishing periodically. Cheap cream bath cleaner works as well as anything else, great for cutting paintwork too; if you get the lemon scented stuff it even smells nice, and it's dirt cheap which always appeals to me.


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