Lexan Refinishing. - Page 3 - Steve Saunders Goldwing Forums

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post #21 of 77 (permalink) Old 01-22-2018, 12:36 AM
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Originally Posted by Bike...and Dennis View Post
It would take a half dozen, or more, of those kits to do this job. Plus the 3 inch pads might leave rows on the shield.
I could loan you my belt sander, I'll even throw in a 36 grit belt.

Advise given here is free and comes with no warranty "Caveat emptor"

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post #22 of 77 (permalink) Old 01-22-2018, 12:39 AM Thread Starter
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I could loan you my belt sander, I'll even throw in a 36 grit belt.
Sure! Drop it by next time you're in the area.

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post #23 of 77 (permalink) Old 01-22-2018, 01:02 PM
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weird windshield fix

I have an 89 Pacific Coast for sale. Last year I had a for sale sign taped on the inside of the windshield. It was the blue painters tape. When I removed the sign, the tape removed some kind of clear coating on the inside of the shield. It looked a whole lot better so I removed the windshield and used tape on the inside to clean the whole thing. It looks 100% better!! Who knew?

What was even more interesting, is duct tape did not remove it!


Rayjoe

I've learned so much from my mistakes, I'm thinking about making a few more.
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post #24 of 77 (permalink) Old 01-22-2018, 01:08 PM Thread Starter
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I have an 89 Pacific Coast for sale. Last year I had a for sale sign taped on the inside of the windshield. It was the blue painters tape. When I removed the sign, the tape removed some kind of clear coating on the inside of the shield. It looked a whole lot better so I removed the windshield and used tape on the inside to clean the whole thing. It looks 100% better!! Who knew?

What was even more interesting, is duct tape did not remove it!


Rayjoe

That's certainly worth a try. Thanks.

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post #25 of 77 (permalink) Old 01-23-2018, 08:11 AM
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I used to be a spray painter but also subcontracted to a company which supplied polycarb stuff. They needed me to repair any scratches on the material prior to delivery. To get it looking like new, the procedure is quite simple but will take some elbow grease.

In your case, I would start by wet hand sanding with maybe 500 grit (grit selection is a black art so don't hold me to it). Keep the part squeaky clean ie no sand or debris on the surface.
Keep a rubber squeegee handy to quickly dry your work to check your progress.
When you think you've removed all the deep scratches (and replaced them with 500 grit scratches) move up to maybe 800 grit.
Rinse and repeat.
Then maybe 1200 and up higher if you feel like it.
Then move to rubbing compounds; 2 different coarseness-es, applied wet.
Then polish. I used to use exclusively Meguiers Machine Glaze. Its awesome stuff. First polish with a soft cloth (I've never used a polishing machine on polycarb... it may work but I've never used one).
Final polish with Machine Glaze on a cotton wool pad. Takes forever but if you didn't skimp on the preceding steps, it should look like new.
I would estimate 5 hours or so to do a windshield. Maybe more, depends on what you're after.
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post #26 of 77 (permalink) Old 01-24-2018, 07:50 PM Thread Starter
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Originally Posted by redwing52 View Post
I tried it once and bought some rather expensive Clear coat with catalyst in a rattle can. Failed miserably. Don't go by me. I have never been good at any kind of painting etc. I tend to be too impatient and nervous.

After some polishing and really looking looking at the finish, I see it is much thicker than OEM and has several runs in it. Is this some of your work?
Attached Images
File Type: jpg coating.jpg (112.3 KB, 39 views)

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post #27 of 77 (permalink) Old 01-24-2018, 07:54 PM Thread Starter
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Anyway, the old finish wasn't coming off, even with 320 grit, and the sanding machine won't work on the concave surface, so, I have resorted to manual labor and 150 grit to start...

...This may take a while.

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post #28 of 77 (permalink) Old 01-25-2018, 09:45 AM
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Remember, Dennis, ......The ox is slow, but the earth is patient.

Charlie
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post #29 of 77 (permalink) Old 01-25-2018, 11:18 AM Thread Starter
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Remember, Dennis, ......The ox is slow, but the earth is patient.

Well, Grasshopper...The Ox can't hold the sandpaper.
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post #30 of 77 (permalink) Old 01-27-2018, 01:59 AM
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Dennis, you hit my "motivation" button with this thread. I had parked my '91 GL1500 8-10 years ago out in the elements, so I watched the windshield get worse and worse with each passing day, month, year. The deteriorating condition of the windshield was the trigger that made me get off my butt and get it "roadworthy" again. I'm happy to have the beast up and running again but I was unhappy that I didn't try to repair/restore the original windshield.

It was one of the first things I replaced when I got the beast back on the road. I've ordered a 3M kit as seen in the video in the hopes that it'll work.
In the meantime though, I decided to try the toothpaste method.

I gathered a tube of Arm&Hammer toothpaste for $3 (the one with baking soda and Peroxide), a foam "applicator", a spray bottle with water (free), and my old Ronson Ultra Shine electric shoe polisher with terry-cloth pad/disc that I used on my motor-boots "back-in-the-day". It spins at 300-400 rpm (i think).

The first pic is the original windshield as it looked when I took it off in May '17. https://www.goldwingfacts.com/forums/...attach/jpg.gif

The second pic is the results of the "toothpaste" on the left side, nothing done to the right side.
https://www.goldwingfacts.com/forums/...attach/jpg.gif

The third pic is the windshield sitting on its side with the left side on top, right side on bottom.
https://www.goldwingfacts.com/forums/...attach/jpg.gif

The last one it the windshield sitting on its side with the RIGHT side on top and the left side on bottom.
https://www.goldwingfacts.com/forums/...attach/jpg.gif

The experiment was a partial success, , , The improvement is very noticeable but it is NOT roadworthy IMHO. Maybe more polishing/buffing would work, , , ,but I'll wait for the 3M kit and try it on the right side for a comparison.
Attached Images
File Type: jpg Lexan_restore1.jpg (34.7 KB, 29 views)
File Type: jpg Lexan_restore2.jpg (33.6 KB, 30 views)
File Type: jpg Lexan_restore3.jpg (33.1 KB, 30 views)
File Type: jpg Lexan_restore4.jpg (36.2 KB, 32 views)
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