I'm doing my car panel by panel because of the limited time I have to work on it. I have the roof and the rear quarters in reasonable shape and have applied PPG etch primmer and then high build primmer K36 I think (I'm at work and couldn't swear that is what it is but I'm almost sure that is what it is) over that. My question is, when I do other panels, like the rockers, or door sills, etc., when I apply the etch I sometimes get a little overspray on the completed panel. Or when I sand out a spot that I was not happy with I sometimes expose bare metal so I spot in the etch and K36. As a result a little of the etch primmer may be laid over the K36 that surrounds the exposed spot. Somtimes if this happened I would just sand the dried etch off down to the K36 and then hit the area the next time I had some k36 in the gun. I hadn't really thought anything about this until somone said that the acid etch might lift the K36, and or eventually fish eye through the BC/CC. Am I in trouble here or is this one of those PYA recommendations by PPG. Is there any kind of sealer I should put on as a last stage before the BC/CC to prevent any problem I may have caused here?

thanks in advance for your response.
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70 and 72 Chevelle
ACES # 4051 MCC # 448
TC # 1549 81/70 Cruisers

[This message has been edited by Professor_SS (edited 05-02-2002).]

You have nothing to worry about. But, I have to say, you should be masking off those other panels. I do just as you do with my projects and I always mask off the adjacent panels just like they were in paint. My two cars that are in progress were done one panel at a time and both of them look like I primed them complete. There are looks of things that can happen when you have overspray. It really should be avoided.

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1965 Buick Gran Sport Convertible
1965 Buick Skylark H/T
"Fan of most anything that moves human beings"

Professor you have nothing to worry about, some etch primer wont touch that k36 but a lot might. When I get ready to respray my 2K primer(K36 and K38 I use) I first mix up a small batch of etch and very lightly spray it over the exposed bare metal areas. Just keep the etch to a miminal. In the tech sheets you will see that etch primers is not one of the compatiable topcoats for K36, the reps that I talked too all say that the etch wont hurt the 2K just keep it small and on the bare metal...Eric

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1970 chevelle
1970 chevelle SS455 not a typo its a buick baby
1949 and 1972 chevy trucks
http://briefcase.yahoo.com/bc/sevt_chevelles

Thanks Guys