Help!! Swirls Reappeared For No Reason!

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David703

New member
Please see my orig post here



http://autopia.org/forum/click-brag/93959-28yr-old-single-stage-black-brought-life.html



All i did was take the truck around the block and the swirls came back completely!!



Obviously something to do with the heat and the sun??



Here are the swirls now..



79blackc176.jpg
 
Not only didnt I use fillers I DIDNT TOUCH IT! I didnt wipe it, spray it, NOTHING!! I left with a mirror finish and came back with that!!!:wall :wall :wall
 
But lets just say that I did use fillers (which i didnt) how could swirls reappear in 10 minutes without wiping the fillers offf??????
 
Hmmm.. let's try to think this through...Did this only happen on the hood? I'm guessing so...I still wonder if the hood was repainted at some point. Or this might be the "messed up ss enamel issue" I alluded to before.



One of two things: a) the "messed up single stage enamel" situation, b) somehow concealed marring gets exposed.



If it was somehow concealed from view you just need to do the correction over again. I don't see a mention of the LSP, just that the last step was Menzerna FP. IIRC that leaves some polishing oils behind.



So if the only thing on the paint was whatever the FP might've left, or a LSP that somehow quickly evaporated/absorbed into the paint (that can happen with ss), then what you're seeing is the marring that you thought was corrected.



But....*HOW* would it still be there after the wetsand? In the pic (good shot, BTW) it almost looks like I can see a little wetsanding marring running in straight lines.



In either case I'm sorta at a loss..I guess I'd try repeating the process (including the sun exposure) only using an alcohol wipe after all the polishing. But man to I hate to think about taking off more paint...If the marring is gone after the wetsand, and it reappears, then you have compromised paint.



IF this *is* the "compromised ss enamel" issue, I fear it might be permanent. In that case I'd just go with the fillers-under-wax approach. And I'd remember this one as an example of why you be careful with some ss paints (no *you* didn't mess it up, if this is what happened it was done before you got it).



Sorry I couldn't be of more help but IMO it's gotta be one of those two choices and it may very well be something that's beyond your fixing; some problems can only be solved with a paintgun.
 
I just returned from the garage... I took the rotory with PG and its like glass again. :confused: So somehow the PG isn't correcting the issue, just hiding it?? How can that be? THere is black paint all over the pad!
 
David703 said:
I just returned from the garage... I took the rotory with PG and its like glass again. :confused: So somehow the PG isn't correcting the issue, just hiding it?? How can that be?
Click to expand...



I'm tellin' ya, ss enamel can be weird ;) Sorta-crappy analogy: think of a piece of fabric that gets wrinkled...you iron it smooth but the wrinkles just keep coming back in the same places.



So they're gone now, right? I'd do an alcohol wipe to make sure any oils are gone and that you have a corrected, clean surface. Even if you have some holograms or something, I'd stop right there for now so you don't introduce any more variables. Take it out and get it good and hot again- see if they come back. You can always finish it up with other steps once you figure out what's going on.



I'm assuming you have time to mess around like that....
 
Can you explain what exactly messed up enamel is? How does it happen and what happens when you try to correct it?
 
I just PG'd one small section. I took it out for a drive and it stayed good. I wiped it down with alcohol and its all good. But I did that when I first did it and it was all good also.. I'll watch it and see. Thanks for all the help.
 
phamkl said:
Can you explain what exactly messed up enamel is? How does it happen and what happens when you try to correct it?
Click to expand...



Actually, no I *can't* explain it! At least not very well but I'll give it a try. The following is a strictly layman's-view attempt at explaining it but it is based on first-hand observation:



Two types of ss- lacquer and enamel. With lacquer, the paint seems to be in distinct layers; if it has problems you can generally abrade away some paint and the problem goes away with the abraded-off paint (as per usual when detailing). The enamels are different and seem to be more "of a single piece" with a glossy "build film" on top. Sometimes problems seem to extend down through the "build film" and throughout the whole of the paint; problems seem to come back in an almost (black) magical sort of way as is the case here. It's as if the scratches are impressed down through it and they "rise back to the top" as the paint heats/dries/whatever and shrinks back down into the scratches. (Actually the scratches don't rise, the paint "drops down" into them.) Or at least that's what *appears* to happen :nixweiss And sometimes when you abrade the top of the enamel, it simply won't come back to a glossy smoothness no matter what you do so you gotta be careful lest you do something you won't be able to fix and end up with worse than you started with.



It's weird to experience and I sincerely doubt that the above explanation is very good as I just don't know much about paint technology. I suggest people who want a decent understanding search for Guitarman's old post on the subject. I dunno what happened to that guy, he never posts here anymore. But he had a great understanding of old-school paints and everything he said agreed with what I've seen over the years.



DAvid703- I'm getting lost between this and the other thread of the subject...see my post there about what I'd use (glaze and carnuaba).
 
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