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Thread: Horrible DA grey scale marks?!

  1. #1

    Horrible DA grey scale marks?!

    Need some advice. I've done many paint correction jobs with my rotarys and DA's. I'm working on the 2000 corvette currently and my flex 3401 is leaving nasty da marks?!

    Using m105 followed by m205. I've tried many other products and still get the same result. What the heck is going on? Using a soft black polishing pad with the m205.

    Car looks beautiful, but under my light it looks like garbage. Any help or advice would be greatly appreciated.

    John
    Oregon

    Horrible DA grey scale marks?!-1483210166515.jpg

    Horrible DA grey scale marks?!-1483210173565.jpg

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  2. #2
    Senior Member DaveT435's Avatar
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    Re: Horrible DA grey scale marks?!

    I hope you mean 105 followed by 205 otherwise that's your problem...
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    2016 Chevrolet Camaro 2SS

  3. #3

    Re: Horrible DA grey scale marks?!

    Quote Originally Posted by DaveT435 View Post
    I hope you mean 105 followed by 205 otherwise that's your problem...
    Thanks for the catch. Edited the post. Thank you.

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  4. #4
    Senior Member DaveT435's Avatar
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    Re: Horrible DA grey scale marks?!

    What color pads are you using? Do you have any polish other than 205. Kind of strange because Corvette paint is known to usually be hard. The only thing I can think of is do another test spot, start with 105, make sure all that is left behind is a little haze. If that paint is extremely hard you may not have removed all the defects with the 105. Then when the paint looks good...or only haze try the 205 again.

    Your saying gray scale. I'm seeing swirls in the paint, I'm assuming the gray your talking about is probably DA haze...does that sound right? Or is there something I'm missing in the picture?
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    2016 Chevrolet Camaro 2SS

  5. #5
    Senior Member DaveT435's Avatar
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    Re: Horrible DA grey scale marks?!

    The first part of your post didn't sink in when I read it the first time. I didn't realize you were that experienced. Have you done a few Corvettes?
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  6. #6
    Senior Member The Guz's Avatar
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    Re: Horrible DA grey scale marks?!

    What pads are you using? Perhaps try finishing out with a different DA instead of the flex.
    Competition Ready Team 1929 Bentley
    1999 Pontiac Grand Prix GT (Daily)
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  7. #7

    Re: Horrible DA grey scale marks?!

    Quote Originally Posted by DaveT435 View Post
    What color pads are you using? Do you have any polish other than 205. Kind of strange because Corvette paint is known to usually be hard. The only thing I can think of is do another test spot, start with 105, make sure all that is left behind is a little haze. If that paint is extremely hard you may not have removed all the defects with the 105. Then when the paint looks good...or only haze try the 205 again.

    Your saying gray scale. I'm seeing swirls in the paint, I'm assuming the gray your talking about is probably DA haze...does that sound right? Or is there something I'm missing in the picture?
    Lake County pads, orange and white followed with black. By Grey scale, yes I mean swirls. Looks nasty.

    Horrible DA grey scale marks?!-1483211240707.jpgHorrible DA grey scale marks?!-1483211243776.jpg

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  8. #8
    Senior Member ronkh57's Avatar
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    Re: Horrible DA grey scale marks?!

    I found the flex did well for initial polish, then change to rupes for finish polish.

    Another thing I see is that you originally said you did 105 with a black lc pad.........

  9. #9
    Senior Member DaveT435's Avatar
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    Re: Horrible DA grey scale marks?!

    Does the paint seem hard? It really looks like the 105 didn't get all the defects. I had a black Infinity I ended up having to take a rotary with wool for the first cut to get the defects out. I still think I would try a test spot with 105 and see if there is any improvement in the swirls. Those swirls don't look like they were introduced by the DA to me.
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  10. #10
    Senior Member The Guz's Avatar
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    Re: Horrible DA grey scale marks?!

    Another thought is that maybe the paint is on the very hard side and you would need to go with a more aggressive approach
    Competition Ready Team 1929 Bentley
    1999 Pontiac Grand Prix GT (Daily)
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