Re: [ihc] Rust intervention

[Steven Stegmann <steve.stegmann@xxxxxxxxxxxxx>]

John,

I'm no chemist but I've heard of coatings like this
that convert rust from ferris oxide to ferric oxide. 
Might be the other direction.  But the final product
is magnetite which is stable and doesn't progress.  I
don't really have any experience to know if this is
possible or just hot air.

Steve


--- John Hofstetter <hofs@domain.elided> wrote:
> There was a vendor at North West Roundup named Rust
> Doctor. He (they) 
> sell the latex rust "stuff" by the quart or gallon.
> Nice display of old 
> rusty stuff that they had reclaimed. He, the vendor,
> said that Rust 
> Doctor makes magnetite out of the rust. I don't
> think he's even close 
> to being accurate there, but the stuff that he had
> reclaimed looked 
> very good.
> 
> First they put the Rust Doctor on, then several
> layers of sanding 
> sealer to even out the surface and then painted that
> surface. So, for 
> example, they had an old rusty wagon with a piece of
> it still covered 
> with rust, a piece with the rust converted to
> magnetite, and a final 
> painted surface. Looked good.
> 
> One of the reasons I bring this up is that I posted
> just before going 
> North that I had used Duro Extend on the surfaces I
> could reach between 
> my inner and outer fenders. Same stuff with a
> different name as far as 
> I can tell. Rust Doctor sells for  $25/qt. and I
> THINK that is about 
> twice what you can find the Duro or its equivalent
> for  at your local 
> hardware store.
> 
> However, it was very nice of the Rust Doctor fellow
> to be a show 
> sponsor and if I hadn't already had a supply of the
> Duro, I'd have 
> bought a quart. He had what was to me a really
> innovative idea and that 
> was to use a garden sprayer to spray the latex up
> into the spaces you 
> can't reach with a swab or a brush. I wish I had
> thought of that while 
> I had  the holes open into my fenders. Not rocket
> science, but I never 
> thought of a garden sprayer.
> 
> Over the years, I've used the latex and have had
> good luck with it. 
> Floor pans and such are so much easier to deal with
> by using the latex 
> than any other way i know. I also use a Phosphoric
> Acid compound that 
> converts the rust to an iron phosphate that is very
> durable and forms a 
> good paint base. However, it makes me kind of
> nervous when I'm using it 
> because the bottle has large red warning signs all
> over it. You're not 
> supposed to drip it on yourself, and I seem to be a
> natural born 
> dripper. I'm talking about when I paint!
> 
> John
> 
> John Hofstetter
> Ol' Saline
> www.goldrush.com/~hofs