Re: When rust is found...

[Huw Powell <human@nh.ultranet.com>]

> Perhaps someone with a chemistry degree could explain just how this
> 'snake oil' works.  Mr. Myers?  You know, the type Eric Axelson is
> promoting with blatant advertising. I have tried different products of
> this ilk and they don't work _when_applied_as_directed_.  Might just
> as well use a rust paint, same results.

I tried the first one I could find, I forget what it was called.  Oh
yeah, "One Step".  The spray didn't work, the brush on did.  "Rust Fix",
in a spray can *does work*.  Goes on clear, you keep spraying every few
minutes to make sure enough chemical is available, the rust all turns
black and hard.  (you should wire brush it as clean as possible first of
course) Over clean metal and painted metal it stays clear.

> 
> And...you apply a coat of paint over top to "protect against
> mechanical damage."  Now _that_ is rich (as used in the 'informal'
> sense).

Well, you don't want a scrape starting the whole thing up again, do you?

I think someone mentioned a description of the chemistry involved, early
in this thread, I think the iron oxide is converted to iron phosphate or
some such.  I dunno.

-- 
Huw Powell

http://www.thebook.com/human-speakers

82 Audi Coupe; 85 Coupe GT
http://www.nh.ultranet.com/~human