Re: [Amc-list] Rust/metal prep.... AGAIN!

[Davis Martin <martin-davis@xxxxxxxxxxxxx>]

That all sounds good but keep in mind Bondo needs something to stick to. Like 80 grit grooves. Bare metal is firn to put bondo over just be sure the rust is treated or removedand prime over the bondo as mentioned.
   Davis 

Sandwich Maker <adh@xxxxxxxxxxxxxxxxx> wrote:
  " From: A Griffiths 
" 
" What do you guys like to put on bare metal before body filler?
" 
" What is the consensus on treating surface rust and filling the pits?
" 
" Anyone have a suggestion on a decent, *inexpensive* primer that I can 
" put on the car until I get it painted a few months later?

fwiw -- armchair quarterbacking:

i did quite a bit o' internet research on rustproofing a few months
ago. i don't have the details at my fingertips but in general --

i'd take a chemical approach. rust conversion coatings really do
neutralize rust, but they need rust to work on; they won't touch clean
metal. if your surface rust isn't heavy, i'd go for a phosphoric-acid
based prep. this actually dissolves rust and also reacts with clean
metal leaving a water barrier iron phosphate layer. in the best of
worlds i'd follow that with a zinc phosphate primer, then an epoxy
primer. i think that would hold up in a dry garage for the time you
need.

bondo over the epoxy, reprime as needed, then paint.
________________________________________________________________________
Andrew Hay the genius nature
internet rambler is to see what all have seen
adh@xxxxxxxxxxxxxxxxx and think what none thought
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