In a message dated 4/16/00 12:25:50 PM Pacific Daylight Time,
> I know a little bit about paint and primers having been in the paint
> business for over 40 yrs. For 10 of those years I was in the R&D lab
> developing corrosion resistant primers for John Deere and Caterpillar
> The no. 1 thing to consider before any primer is METAL PREPARATION! The
> surface must be rust free, oil free, dirt free, etc. You must put some
> kind of phosphate on the metal whether it be iron or zinc. There are
> lots of products available for this just ask your local paint dealer or
> bodyshop what product they recommend. The reason you need this is that
> it will give you rust prevention and promote adhesion of the primer.
> Actually some slight flash rusting is good and will be present on the
> surface after the phosphatizing procedure. Todays primers do not
> contain lead or zinc anymore for several obvious reasons. This means
> that the primers available today are strictly to fill in the surface of
> the metal and give you adhesion of the topcoat and do not prevent
> corrosion any more than the topcoat.
> Consider this your Primer primer. Do not hesitate to contact me with
> any of your metal finishing questions.
> Tom Poterack
> '49 Chevy 3600
I've always wondered something about the phosphating process.....after
applying it, then letting it "cure", what type of prep do you recommend? i/e
just wet rag wipe and air dry, or resanding?
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