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Technical Clear coat on glass

Discussion in 'Traditional Customs' started by Leadsled 49, Feb 1, 2015.

  1. Leadsled 49
    Joined: Oct 27, 2014
    Posts: 17

    Leadsled 49

    Anyone cleared a window? I have deep scratches in my shoe box back window. I'm thinking of clearing the whole window then sanding and buffing it.
  2. no i have not
    i don't think it will hold up
    i don't think it will be as clear as glass
    can't hurt to try
  3. Never heard of anyone doing it. HRP
  4. Special Ed
    Joined: Nov 1, 2007
    Posts: 6,264

    Special Ed

    Quit being cheap. Replace your scratched glass. It could save your life.

  5. Moriarity
    Joined: Apr 11, 2001
    Posts: 19,893

    Staff Member

    i bet it wouldnt stick, no mechanical or chemical adhesion, probably not opticaly clear enough either
  6. Kensey
    Joined: Sep 25, 2006
    Posts: 735

    from Pittsburgh

    If it would work, the body guys would have been doing it for years. They have tricks, secret tricks...
  7. Maybe that's the body guys secret trick. That's why no one else knows about it.
  8. saltflats
    Joined: Aug 14, 2007
    Posts: 10,393

    from Missouri

    Have you tried one of the glass polishing kits.
  9. blowby
    Joined: Dec 27, 2012
    Posts: 7,055

    from Nicasio Ca

    How does that glass chip repair kit work, never tried one. Maybe you could slather that stuff on and buff it.
  10. Black Clover Custom
    Joined: Dec 20, 2014
    Posts: 499

    Black Clover Custom

    Have you seen a panel get spot cleared? If you look close the edge is always their no matter how much feather buffing you do. You would just be filling the scratches with clearcoat. I would try wax before the expensive stuff.
  11. Leadsled 49
    Joined: Oct 27, 2014
    Posts: 17

    Leadsled 49

    Ya I tried the scratch repair kit (commercial) it made it worse. I cleared a small square looks great from the outside. By the way I am a paint and body guy:)
  12. Black Clover Custom
    Joined: Dec 20, 2014
    Posts: 499

    Black Clover Custom

    Wait wait wait... Your going to heavy clearcoat the whole thing? Wow. Go for it. Use some adhesion promoter. Maybe tint it with drops of candy color before spraying.
  13. oldolds
    Joined: Oct 18, 2010
    Posts: 3,052


    Back in the gasser war days, there were many cars racing with dark tinted windows. Most of it was spray on window tint. It was on the inside, but held up for years. Clear on the outside... I would think it would get a fogged look after a while.
  14. martinautobody1
    Joined: Jul 18, 2012
    Posts: 54

    from Ohio

    If you try it, you could sand the entire window for adhesion. The clear will fill the sand scratches. I would mask of a small square, 4 Inches or so and spray that to see how transparent the clear is.

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  15. Kiwi 4d
    Joined: Sep 16, 2006
    Posts: 2,883

    Kiwi 4d

    I have tried the glass polishing kit . Spent a day or so sanding and polishing as per instructions , sure it helped but wasn't really worth all the effort . The glass came out a little wavy but still scratched, maybe they were too deep?
  16. Tim Keith
    Joined: Jan 1, 2010
    Posts: 65

    Tim Keith

    I believe 3M makes a clear film that is used to prevent Lexan from scratching.
  17. Slopok
    Joined: Jan 30, 2012
    Posts: 2,593


    Is a Shoebox Rear window not available or is it cost prohibited?
  18. john worden
    Joined: Nov 14, 2007
    Posts: 1,645

    john worden
    from iowa

    I'm sure you know that when clearing over paint sand scratches 600 or finer will cover. Do a test panel. Luck.
  19. indyjps
    Joined: Feb 21, 2007
    Posts: 3,991


    Not much to lose except time and the cost of the clear. I doubt it will hold up well, but what do I know.
    You gotta etch the glass somehow, DA with 800 or 1000?
    I like the idea of tinting it, in case the clear ends up not actually clear, not sure if the tint will settle down in the deep scratches.
  20. Be sure to use a quality primer first
  21. spanners
    Joined: Feb 24, 2009
    Posts: 1,039


    Let's get fair dinkum here. Everybody knows the only way to get paint to stick to glass is to spray an area near the glass. As a result, the oversprayed paint will stick like shit to a blanket, but if you intentionally prepare the glass for paint, it will peel off.
    '51 Norm and blowby like this.
  22. This shit is funny.......................................
    da34guy and tommyd like this.
  23. rdscotty
    Joined: Sep 24, 2008
    Posts: 189

    from red deer

    Back in the 90"s I was working at a bodyshop where one of the techs put a bad scratch in a customer's hatch glass. They said they were going to make him pay for it. He spent 2-3 evenings of his own time first wet sanding with a dual action sander and then polishing. He just used ordinary paint polish products. When he was done, there was a slight wave in the glass but the scratch was gone.
  24. tommyd
    Joined: Dec 10, 2010
    Posts: 11,328

    from South Indy

    I had a windshield polished once.[ Wiper scratches] Had some bad hallowing going on during night time driving.
  25. Leadsled 49
    Joined: Oct 27, 2014
    Posts: 17

    Leadsled 49

    I can get a new window for $350 just thinking this would work for the short term.
  26. desotot
    Joined: Jan 29, 2008
    Posts: 1,824


    We used to use jewelers rouge and water with a buffing wheel but it would leave a wave which gives a distortion when you look through it. This is a problem if it is in the windshield and you are stuck looking through it as you drive but you say it is the backglass so you may be able to live with it. However it is a messy time consuming job, you may want to bide your time and look for a better window cause they are fairly abundant compared to some.
  27. samurai mike
    Joined: Feb 24, 2009
    Posts: 474

    samurai mike

    i never look back.
    da34guy and BarryA like this.
  28. sololobo
    Joined: Aug 23, 2006
    Posts: 8,142


    I am curious as to what is scratching your glass? Seems unusual to have a reoccurring problem like this.
  29. flamecrazy
    Joined: Sep 23, 2004
    Posts: 79


    Try House of Kolor adhesion promoter. I have old cans,so don't know if they changed the #.ADHERETO AP-01 is the part # on the can I have. I have painted on the out side of the glass with this and it holds up good. It will scrap off if you try but if you take care of it it will be fine.Its made to spray over glass and chrome. Good luck. I am a body guy, this is old school tech...
  30. unkledaddy
    Joined: Jul 21, 2006
    Posts: 2,865


    I think I'd polish it with a $350.00 bill.
    da34guy and turboroadster like this.

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