05-20-2008, 08:34 PM
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Registered User
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Join Date: Mar 2007
Location: San Antonio, Texas
Posts: 667
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 Quote:
Originally Posted by PSk
This is not correct, I believe. Metal needs to be sealed first, otherwise it will sweat and rust will start under filler.
Please ask Daron (akitaman) this question.
Pete
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Pete, I don't paint cars but I can describe the process, having observed an expert at work (what can I say this is what anthropologists do. . .  ). Tony, the guy that taught me this stuff was very catholic about prep work. He never put Bondo, lead (which he did not like) or brass filler over primer or sealer. Never. He always made sure that the bare metal surface was absolutely clean and prepared before he applied filler (which he used in very sparing amounts---paper thin more or less). His view was that filler adheres better to a bare metal surface.
I'm describing decidedly "old school" techniques. The technology has obviously advanced since the 80's when Tony was last working. I recently saw an article in Grass Roots Motorsports which described surface prep in which a thick primer/filler was sprayed over the car and then the high and low spots were worked on. Tony would never done it that way. With his cars you'd see lots of smooth, bare metal with small areas of filler. And, if you had enough money, you could see an entire car ready for flawless, concour quality paint with no filler at all. His view was that the less primer/filler on the car the better. He wanted his work to last a decade or more, which it often did.
These are just observations. Daron and others on the bb who actually do the work are, of course, the experts.
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Jim . . . '72 Super 1300, '70, 1750GTV, 2nd series,
'62, Lancia Flaminia Zagato3c, 2nd series
Last edited by 180OUT; 05-20-2008 at 08:38 PM.
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