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Old 01-18-2013, 03:32 PM   #1
everycredit OP
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Spider webs on windshield--can I sand them out?

I've seen minor scuffing being polished out of windshields, headlights, etc. Mine seems uglier than that.



I started with 1000 grit sand paper and wet sanded. Eventually went to 3000 grit and then polished. All it ended up doing was making my windshield look cleaner, but still had those spider web marks.

Would being more aggressive with the wet sanding (starting with 100 grit?) do any good? Or should I just replace the windshield? What are your experiences on this?

Thanks!
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Old 01-18-2013, 03:49 PM   #2
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if its "crazing" due to age or chemical attack then no.... it is too deep. your description of "spiderwebs" sounds like crazing to me... very common on older aircraft plastic.
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Old 01-18-2013, 03:56 PM   #3
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Quote:
Originally Posted by Beezer View Post
if its "crazing" due to age or chemical attack then no.... it is too deep. your description of "spiderwebs" sounds like crazing to me... very common on older aircraft plastic.
It's hard to photograph, but it sounds like "crazing". Alright, I'll put the $3 in sandpaper costs toward a new windshield.
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Old 01-18-2013, 04:13 PM   #4
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Hi all ! I would try one of those kits for polishing bad headlight lenses . We used the 3M kit on our cars and they came out awesome .
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Old 01-18-2013, 04:34 PM   #5
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Hi all ! I would try one of those kits for polishing bad headlight lenses . We used the 3M kit on our cars and they came out awesome .
I tried it. Like I said, it looked cleaner, but it's still opaque.
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Old 01-18-2013, 04:37 PM   #6
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Careful applications of heat can fix minor scratches and crazing in polycarbonate plastic.

http://maic.jmu.edu/journal/10.2/r&d...tz/heafitz.htm
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Old 01-18-2013, 04:43 PM   #7
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Originally Posted by Yamarocket630 View Post
Careful applications of heat can fix minor scratches and crazing in polycarbonate plastic.

http://maic.jmu.edu/journal/10.2/r&d...tz/heafitz.htm
Where the hell did you find this?
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Old 01-18-2013, 05:15 PM   #8
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Haven't tried it myself but I've heard that the mild abrasive in toothpaste can help revive old windscreens.
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Old 01-18-2013, 07:58 PM   #9
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go with #3
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Old 01-18-2013, 08:32 PM   #10
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Some combination of methods above have now caused my windshield to be unusable.

This is now moot.
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Old 01-18-2013, 08:34 PM   #11
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acrylic can be polished back to clear.... polycarbonate on the other hand will never come all the way back.

there is a kit made by Micromesh to repair aircraft windshields that works good, but all it really is is a set of cloth sandpapers from about 800 to 8000 grit.

I have had good results doing what you did. 400 or 600 to remove scratches, then 1000, 1500 and maybe 2000. follow that with rubbing compound. I like Presta. they make 1000, 1500, 3000... etc. 1500 removes scratches left by 1500 sand paper. I use the 1000 then the 3000. finish with Plexus or Pledge

all this stuff can be had from a real autobody paint store

I would try a small spot to see if you can get all the spiderwebs out. if it works then do a bigger area


edit: oooop... looks like I'm too late. ah well I'll leave the post anyway because the stuff listed works
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Old 01-18-2013, 09:05 PM   #12
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So long as you do not look through it, one solution to pretty it up is to simply paint it. I did this on my 1100GS and it looked pretty good.

For actual scratches and gouges, sanding can work wonders:

http://www.advrider.com/forums/showthread.php?t=853435

From this:



To this:



In about 20 minutes.

Jim

JimVonBaden screwed with this post 01-19-2013 at 03:12 PM
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Old 01-18-2013, 09:15 PM   #13
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Originally Posted by JimVonBaden View Post
So long as you do not look through it, one solution to pretty it up is to simply paint it. I did this on my 1100GS and it looked pretty good.

For actualy scratches and gouges, sanding can work wonders:

http://www.advrider.com/forums/showthread.php?t=853435

From this:



To this:



In about 20 minutes.

Jim
Eh, oh well. Mine already caught on fire.
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Old 01-18-2013, 10:47 PM   #14
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eh, oh well. Mine already caught on fire.
pics or it didn't happen! :p
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Old 01-19-2013, 04:41 PM   #15
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pics or it didn't happen! :p
It didn't flame up, but it was burned enough to say "f it"!

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