Badly Scratched Plexiglass Window - Help Needed!

Badly Scratched Plexiglass Window - Help Needed!

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100 IAN

Original Poster:

1,091 posts

163 months

Thursday 15th June 2017
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Is there a way to get a scratch polished out of a plexiglass window without making it 'cloudy'?

The dealer I bought the car from took it to a specialist valeter who said it wasn't possible without leaving a myriad of tiny scratches, which would make it look 'cloudy' and more unsightly than the single scratch there is now.

NB The valeter in question regularly does plastic headlight lenses and they are left perfectly crystal clear, but for whatever reason the rear plexiglass window he was unable/unwilling to tackle. (different material?, plexiglass vs. plastic perhaps?)

I'm hoping that whilst not a job he was able to undertake, it might be something a more specialist person/company might be able to do.

Any recommendations?, Ideally Surrey/Sussex/SE England but will travel to get the best result.

Summit_Detailing

1,903 posts

194 months

Friday 16th June 2017
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Try a detailer local to you, I've gently machine polished the rear engine cover's on numerous F40's without a problem, and sliding plastic side windows on a rare spec Challenge Stradale which improved greatly although not 100%.

cheers

Chris

100 IAN

Original Poster:

1,091 posts

163 months

Friday 16th June 2017
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Spoke to a couple of specialists today and sent them the above image, they weren't very optimistic.

I need to ascertain whether its made of Acrylic* or Polycarbonate*. If Polycarbonate i'm told its a definite no, and if acrylic then it depends on how deep it is.

  • *These being intrinsically different materials, all other names - Plexiglass, Perspex, Lexan etc are just brand names I'm told.

PH5121

1,965 posts

214 months

Wednesday 28th June 2017
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There is a product designed to remove scratches from caravan windows (which are plastic) made by Fenwicks called Windowize.

I successfully got rid of the haze caused by multiple small scratches on my caravan windows using it. It was £7 or £8 from Halfords. They also do more abrasive products for deeper scratches, it may not be suitable for your purposes but at least it has been designed for use on plastic and acrylic windows.

227bhp

10,203 posts

129 months

Wednesday 28th June 2017
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If it isn't moulded in any way is it not easier to buy a new piece?
It looks like a deep straight scratch which is never going to come out successfully and also some stress cracks or crazing further down.

Jonny TVR

4,537 posts

282 months

Thursday 29th June 2017
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Changing the subject slightly Ian .. notice you have a GT-R under construction .. is that at alfaholics? those are amazing, just got my 1970 1300 gt junior back from them, however mine has a 1300 engine

paintman

7,694 posts

191 months

Thursday 29th June 2017
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I've done a lot of plastic caravan window scratches for a trade customer using a compounding mop & Farecla G3.

Be very careful to avoid a build up of heat as it can be game over very quickly.

If the scratch is very deep you may well get a smooth & shiny surface again but you are also likely to get a 'hall of mirrors' type distortion.

PoshTwit

1,218 posts

154 months

Tuesday 4th July 2017
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As Chris says - it is entirely possible to reduce and often remove scratches from plastic screens.

We often do so on aircraft windscreens where lack of distortion is obviously key. The trick is to use a forced rotation DA such as the Flex VRG or new Rupes Mille (when it's released) as the movement helps to dissipate the heat, where the forced rotation ensures that the machine does not bog down on curves.

As another has stated, that does look to be a deep scratch that may even require some light sanding, but no amount of polishing is going to reduce or remove the stress cracks that you can see further down the picture.

Do let me know if we can help at all - we travel nationally and may be able to fit it in with another job in your area - www.aircraftpaintprotection.co.uk