dpb wrote:
DerbyDad03 wrote:
...
All other things being equal (weather, moisture, etc) as they would
be, does the mere presence of rust on one surface make the other
surface more apt to rust?

No. If anything, the rusty surface will tend to inhibit or slow down
additional oxidation of the material as it tends to act as a barrier.
Cleaning the rust layer off exposes fresh material to be oxidized.

--
Chuckle. Learned that the hard way a few times. Prep the metal one day,
get tired, figure I'll paint in the morning. Wrong. End up going over
the whole thing again, even though the flash of rust was paper-thin.
Rust Never Sleeps, indeed. Learned at a young age about waxing saw
blades and table saw beds. Not much sadder looking than a rusty table saw.

--
aem sends...