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Old 09-26-2005, 01:00 PM
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Default removing scratches in a plastic windshield

While out in my Parker yesterday in Cape Cod Bay, I noticed my plastic windshield was all scratched up. I had been using( ) a plastic squeegie to wipe and clear the water and spray away from my windshield. Judging by the scratches, this assinine action by me caused the scratches. Is there any way to remove these scratches? They are not deep but refelct the light when the sun is up.

Thanks for your help. Oh by the way, the squeegie melted an an unfortunate grille accident!
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Old 09-26-2005, 01:29 PM
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Default RE: removing scratches in a plastic windshield

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Uncle Matt - 9/26/2005 2:00 PM

While out in my Parker yesterday in Cape Cod Bay, I noticed my plastic windshield was all scratched up. I had been using( ) a plastic squeegie to wipe and clear the water and spray away from my windshield. Judging by the scratches, this assinine action by me caused the scratches. Is there any way to remove these scratches? They are not deep but refelct the light when the sun is up.

Thanks for your help. Oh by the way, the squeegie melted an an unfortunate grille accident!
this is a tough one - I had the same sitatuion done more or less the same way and ended up replacing it - you can get amny of the plex polishes that work OK but if they are deep or very complex, it's a futile effort. I even bought a kit for plex that had polishing wheels that got progressively smoother to no avail. Look here:
www.micro-surface.com
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Old 09-26-2005, 02:16 PM
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Default Re: removing scratches in a plastic windshield

Try some Blue Magic Plastic and Plexiglass Cleaner, found at most auto supply stores. I had some light scratches and it worked great. PS: use it with a dampened sponge as an applicator...........
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Old 09-26-2005, 03:08 PM
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Default Re: removing scratches in a plastic windshield

I had the same problem once...3M's Finesse-it II (something like that) did the trick.
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Old 09-26-2005, 03:39 PM
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Default Re: removing scratches in a plastic windshield

I fabricate and sell both acrylic (pelixiglass) and polycarbonate(lexan)...I assume your windshield is made of 1 of these 2 materials.....use a product called Novus....it comes in 3 different grades....use the #3 first and then the #1....use a 100% cotton clothe or even better a cotton baby diaper....this stuff works great.....you can buy it from any plastic distributor (pm me if you can not find it locally: I sell it but I don't want to violate any rules on this site)....it is cheap...both grades should not cost anymore then $10.00....in the future, do NOT use anything like Windex,409 or any glass cleaner...do NOT use paper towels...both acrylic and polycarbonate scratch very easy....use a mild detergent (dishwashing liquid soap) and the cotton clothe (the tighter the weave the better)....any questions, please pm me...good luck
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Old 09-26-2005, 06:25 PM
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Default Re: removing scratches in a plastic windshield

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BIGSILK - 9/26/2005 8:39 PM

I fabricate and sell both acrylic (pelixiglass) and polycarbonate(lexan)...I assume your windshield is made of 1 of these 2 materials.....use a product called Novus....it comes in 3 different grades....use the #3 first and then the #1....use a 100% cotton clothe or even better a cotton baby diaper....this stuff works great.....you can buy it from any plastic distributor (pm me if you can not find it locally: I sell it but I don't want to violate any rules on this site)....it is cheap...both grades should not cost anymore then $10.00....in the future, do NOT use anything like Windex,409 or any glass cleaner...do NOT use paper towels...both acrylic and polycarbonate scratch very easy....use a mild detergent (dishwashing liquid soap) and the cotton clothe (the tighter the weave the better)....any questions, please pm me...good luck
FWIW, I have used Novus on motorcycle windscreens for years and it works pretty well. Of course there are some scratches that nothing will fix...

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Old 09-26-2005, 06:44 PM
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Default Re: removing scratches in a plastic windshield

Your 'plastic' windshield should be safety glass!
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Old 09-26-2005, 07:10 PM
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Default Re: removing scratches in a plastic windshield

We have also used Novus. Salt water crystals will scratch vinly sheet and plexiglass/lexan (some have hard coating). I have always washed with water and then a wet Chamois after any dirt or salt was off.

BigSilk--how about the new microfiber cloths, which are safe to use on coated camera lenses? I have been tempted to used these for the wash phase.

Thanks
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Old 09-26-2005, 07:30 PM
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Default Re: removing scratches in a plastic windshield

You all will laugh and call me crazy, but I have used 3M perfect it III rubbing compound to remove scratches from several plexi glass windshields. I was desperate and tried it on a bad windshield and it worked like a charm. These scratches were pretty deep and were removed fairly easily with the compound.

Give it a try, worked great for me.
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Old 09-27-2005, 11:13 AM
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Default RE: removing scratches in a plastic windshield

The 3m perfect it III either by hand or machine buffing then finish with plexus for a new look.

If scratches are real bad use a 600-800 grit sand paper followed by 1200-1500 grit, then the rubbing compound and finally polish with plexus
works Great. Just did the shield on the front of my motorhome and it looks like new, after 102000 miles!
Have also used on the Isinglas windows on the boat with same results
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Old 09-27-2005, 11:58 AM
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Default Re: removing scratches in a plastic windshield

Thataway....yes...the microfiber clothes are perfect
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Old 09-27-2005, 07:47 PM
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Default Re: removing scratches in a plastic windshield

Bigsilk knows his stuff. As a teacher of Plastics at Miami Killian Senior HS, I've seen it all. Never use an ammoniated cleaner like Windex. Novis 3 part works fine; also there is a product they use to polish the scratches out of Aircraft windshield (yes they are acrylic) its called Micromesh. It comes in a kit with progressively fine waterproof silicon carbide paper. This will also work.
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Old 09-28-2005, 10:21 AM
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Default Re: removing scratches in a plastic windshield

Since the plastic experts are all here, I'd like to ask a question. Is there anyway to get the water (sea spray) to bead OFF like on a car's windshield after rainex. I have a plexi windshield that I have been using plexus on (excellent advice on this forum) and it works beautifully. But if it gets wet the water beads and holds, thus obstructing the view. Thanks.
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Old 06-17-2012, 04:56 PM
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I made a similar mistake. When my boat was shipped to me the windshield was covered in bugs. Not thinking, I was using the brush and decided to clean my plastic windshield (2007 wellcraft 252 fisherman). I have light scratches. Any suggestions to remove the scratches from my tinted windshield?
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Old 06-17-2012, 05:02 PM
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I used Meguiars Plastix with very good results.
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Old 06-17-2012, 05:10 PM
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http://www.diamondite.com/clear-plastic-care.html
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Old 06-18-2012, 12:32 AM
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Quote:
Originally Posted by thataway View Post
We have also used Novus. Salt water crystals will scratch vinly sheet and plexiglass/lexan (some have hard coating). I have always washed with water and then a wet Chamois after any dirt or salt was off.

BigSilk--how about the new microfiber cloths, which are safe to use on coated camera lenses? I have been tempted to used these for the wash phase.

Thanks
Just want to throw a word of caution re usng microfiber cloths on canvas clears and windshelds. Last trip of the year last season, I took out a good friend who was willing to 201 polish and buff out the inside of the clears on the way out after I had just done the outsides. He picked up a microfiber towel off the dash but momentarily put it down on a seat cushion where he had put his boat bag that had dropped a couple grains of sand. The microfibers are like little soft velcro hooks and they picked up & gripped those couple grains of sand which managed to put quite deep scratches in the 3 port side Ez2Cy panels that had held up so beautifully for so many years. Too deep to reasonably polish/buff out . I never told him since he was just trying to help, but it cost me over $900 to replace just those 3 clear panel inserts this winter so they look good again . I avoid those nice microfibers for this use now .
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Old 06-18-2012, 05:21 AM
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Magic Buff...
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Old 06-18-2012, 05:53 AM
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Get Meguiars #10, #17, #18 Plastic Polish, Cleaner and Detailer. Follow the directions. It can remove pretty decent scratches and really cleans the plastic nice.
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Old 06-18-2012, 05:59 AM
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Quote:
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You all will laugh and call me crazy, but I have used 3M perfect it III rubbing compound to remove scratches from several plexi glass windshields. I was desperate and tried it on a bad windshield and it worked like a charm. These scratches were pretty deep and were removed fairly easily with the compound.

Give it a try, worked great for me.
Not crazy...that's the way to do it. Works just fine for light scratches.
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