----- Original Message -----
From: "Anita Hawkins"
Subject: [IBC] Removing Tool Rust?


paghat wrote:

With any extended exposure, the carbonic acid in Coke dissolves iron,
not
just the rusty bits.



Gosh, doesn't everyone think we've wasted enough space talking about Coke
removing rust? NO ONE uses coke to remove rust to ready ANYTHING for
refinishing or to restore it! C'mon.

The "black" coating mentioned in another response (sorry, didn't save
it) is not the return of rust to elemental iron as suggested, but the
formation of a dark iron oxide, Fe3O4, aka gun bluing, though it IS a
protection against further rusting.

Blueing has been a long-time method to protect steel. Guns ( old blueing
from the 1800's was beautiful), tools, etc. Cold Blueing ( which I've used
lots) is nice, looks good but doesn't protect ( for certain) the way that
hot blueing ( gun industry) does and needs re-done frfom time to time. . oil
emersion, and a few other tricks, during heat treating is also a great way
to color/protect metal.


...Coca Cola syrup delivery vans & trucks have to have
special permits for the transport of highly corrosive materials.

Doubtful; this may be an urban legend, too. Even concentrated Coke
(syrup) is not very acid. corrosive, yes, but not "highly", just
"barely". A more likely reason
for treating the syrup as a corrosive agent is that even a small
amount of dissoved metal ions would result in a metallic off-taste to
the Coke loss of bucks and reputation are big motivators for big
companies!

As a EX-Coke employee ( I worked at the Akron plant in late 60's paying my
way through electronics schooling) I can tell you that the concentrated
syrup was mixed 6:1 with water. The old original 6 1/2 oz. classic
distinctive glass bottles had 1oz of syrup.It was delivered in, and they
kept it in large stainless steel tanks and it did drip a bit on the floor
and had eaten away at the cement a TAD over about 50 years.

Dale

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