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Old 04-14-2016, 09:01 AM
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Cut, Buff, then rough again

I painted my vehicle and cut and buffed,I compounded then polished have not waxed yet. It felt slick as glass then a few weeks later it feels like 2000 grit sandpaper.

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Old 04-14-2016, 09:24 AM
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was the compound a filler type ? if so it does not last long. i use Vseries by chemical guys .
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Old 04-14-2016, 10:20 AM
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Kind of an odd description never seen that happen. But maybe how you are saying it is just different. But the only thing that could have happened is "die back" where solvents trapped in the film escaped once you "opened it" up by cutting and buffing.

If this is the case, you may need to sand it again lightly, then leave it like that a day or two to allow more solvents to escape before you polish it. This should not be needed, but apparently you applied trapping solvents by applying it too wet, too many coats, not enough flash time between coats, or a combination of a few.

Brian Repeat.
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Old 04-14-2016, 10:27 AM
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I used Presta 2 Step compounding and polishing products
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Old 04-14-2016, 10:39 AM
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what paint ? many clears will die back some. we call them double buffs because you end up polishing them twice.
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Old 04-14-2016, 10:46 AM
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I used SPI universal clear
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Old 04-14-2016, 11:24 AM
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i would suspect compound . i have never had uv clear die back. the only presta i have used is ultra cutting cream . i would just hit it again with compound. chemical guys sells a sample pack of the vseries for 20 bucks. worth the try. it will do a car . i use the orange and the black hexlogic pads .
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Old 04-14-2016, 11:46 AM
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The thing is it doesn't matter what compound you use, unless you put a "glaze" like wax over it that goes away in a week or something like that. The "compound" that cuts the surface to a shine removing the sand scratches isn't going to change later.

I don't care if it's the best clear in the world isn't going to die back if it was applied too heavy? I have seen it with clear that I had very good luck with where someone piles it on and it is full of solvents and it dies back. Now. if it's simply recompounded it may be enough, the solvents have possibly escaped. But any clear is going to trap solvents if it's piled on. It's nothing to do with the quality of the clear, it's with the application.


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Old 04-14-2016, 11:58 AM
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Would the escaping solvents catch dust particles, not in a controlled environment, I would have thought you could have just washed off but it didnt work
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Old 04-14-2016, 12:15 PM
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Quote:
Originally Posted by bigge31566 View Post
Would the escaping solvents catch dust particles, not in a controlled environment, I would have thought you could have just washed off but it didnt work
No, they aren't going to "catch" them but the surface being wet longer would do that because it's lengthening the time it is wet thus lengthening the time something can end up in it.


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Old 04-14-2016, 01:21 PM
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I went back and hit it with 2000 lightly wet sanding and it smoothed out will go back in a couple weeks and rebuff
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Old 04-14-2016, 01:35 PM
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Do wait and see what Shine says about how long to wait. I have never used that clear and some can get pretty hard where waiting that long can kick your butt.

Brian
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Old 04-14-2016, 03:16 PM
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i'e never had to rebuff it. i shoot 3 coats let dry overnight , block with 600 then 3 more coats the next day . if you reduced it you add time . but if your seeing 2k scratch then the compound has a filler in it . if it dies back it just gets a little fuzzy . i shoot then turn the fans off .
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