I too am a rank amateur, but have read a lot and also have the video on
spray painting that the Auto Body Store sells (got this site from the
list awhile back: http://autobodystore.com).

I use an epoxy primer from PPG, the video recommends either this or
etching, which I have not used.  Catalyzed is probably the same, but
check with your supplier.

Gary Shea wrote:
>
> I buy the panel warping concern, although MIG is pretty cool as welding
> goes.  I'm curious about your mention of "etching or epoxy" primer.  I
> remember that the zinc chromate (?) primers were called "etching", but
> they're not available any more as far as I can tell.  Are there others?
> And is an "epoxy" primer the same as a "catalyzed primer"?  I have been
> using the Western catalyzed primer with good results, but have never
> heard of "epoxy" primers.  Then again, I'm a rank amateur!
>
>         Gary
>
> On Tue, 15 Jun 1999, Stuart MacMillan wrote:
> > Welding the seams is definitely a bad idea.  First, you will warp all
> > the flat panels, second, it will take a lot of grinding and filling to
> > make it smooth, and last, you will make any future repairs where panel
> > replacement is required nearly impossible.
> >
> > Sand blast, treat with a chemical rust killer, prime with etching or
> > epoxy primer, and fill partially with a professional type body seam
> > sealer for looks before painting if you like.

--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext 208

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