On Thu, 5 Feb 2009 23:11:51 -0600, "Maxwell" #$$9#@%%%.^^^ wrote:


wrote in message
.. .
On Thu, 5 Feb 2009 20:49:47 -0600, "Maxwell" #$$9#@%%%.^^^ wrote:


"stol" wrote in message
...

Rust converters not properly and completely flushed will corrode the
parent metal.. I guess I should have mentioned that first but I did
assume that is a no brainer.

My bad.

over and out.

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Not all brands require a flush. Some convert surface rust to a hard dark
grey coating that seems to be an excellent sealer.


Phosphoric Acid (Metal Prep) does just that - used as an "etch" in
auto-body work to give the primer some "tooth" as well as getting rid
of any minor surface "flask\h" rust. Makes Iron Phosphate.

This is the product I used
http://www.idealtruevalue.com/servlet/the-47233/Detail
Treated some rust areas in a truck bed under a bed liner. When I sold the
truck ten years later, the treated areas were still free of corrosion.

Not bad stuff but expensive (relatively) and not good for getting into
the real close stuff in welded clusters. Not sure which of it's
ingredients are the active rust converter.