Scratched windshield

Is there a way to buff some scratches out of an old windshield?

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Scratched windshield


Post by PanPal » Tue May 02, 2006 7:10 pm

Is there a way to buff some scratches out of an old windshield? Picked a top section up and there are no cracks, but just as many scratches. On coming headlights are hell! :-/

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Re: Scratched windshield


Post by kr8 » Wed May 03, 2006 12:21 am

There used to be a glass place down the street from me. The oldtimer there used to swear Lemon Pledge furniture polish was the ticket for scratches in plastic windshields. I never tried it and he's gone now but might be worth a try.

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Re: Scratched windshield


Post by Billy » Wed May 03, 2006 6:40 am

Lexol, has a fine polishing compound, (light scratches) for lexan windscreens.
& a heavier compound for heavier.
Still must finish w/the fine compound..

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Re: Scratched windshield


Post by Kurt » Wed May 03, 2006 9:42 am

I had the same problem when I was racing circle track. Towards the middle of the season the Lexan would get so scratched from wiping it down that I could hardly see under the lights at night. I tried all of the cures to fix the scratches and finally gave up because no product did what it claimed to do. I ended up using Mcquires #7 before each race to reduce the glare and swirl marks.

If you find the miracle cure, let us know.


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Re: Scratched windshield


Post by Cotten » Wed May 03, 2006 1:17 pm

Vintage 'beaded' windshields and modern reproductions are cellulose acetate. The can be worked out with 2000 grit wet-or-dry paper, then finer and finer compounds with the result dependent upon your perseverence.

Modern Lexan shields, normally sans bead around them, often have a thin layer of a scratch inhibitor that doesn't like abrasives. If you accidentally buff through it, you might as well take a pressurewasher and peel off the rest of it. Then it also will buff with finer compunds and glazes.

When custom-cutting shields from Lexan sheet stock, I found that after sanding, a quick-cutting 'rouge' for buffing the edges was common kitchen scouring powder, like Babo or Comet.

One barnyard trick that I still use daily on my blast cabinet windows is a wipe of acrylic floor wax, like Glo-Coat. It can make a dramatic difference in visibility through damaged plastic.......until it rains!


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