What is done to this iron?

There is a "rust movement" that seems to be in fashion these days.  I understand that iron will rust but it seems to be made to happen a bit faster than normal in the dry Arizona desert.

One picture is of a fence that has been finished for some time.  The other is of a mail box that was just finished.


Picture of What is done to this iron?
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Re-design7 years ago
Read this instrucable.  They seem to know what to do.
orksecurity7 years ago
https://www.instructables.com/id/Produce-a-Rich-Rust-Patina-on-Iron-and-Steel-Safe/?ALLSTEPS
Using the right kind of steel helps. Corten is one of them, which patinates prettily.
orksecurity7 years ago
I believe copper is sometimes patinated (or at least has its patina accelerated) by washing it with an acid solution. I don't know anything about which acid or how dilute.

(When I was a student, we were seriously considering a prank that involved painting part of a new copper roof with a transparent "resist", so a message would gradually become visible as the rest of the roof weathered around it. Our guess was that nobody would notice for 5-10 years.)
lemonie7 years ago
"Painting" it with brine might help?

L
Or, as Picasso reportedly used to tell his son (in order to accelerate the formation of a patina on one of his sculptures): "Go piss on the goat."
Yes, it's electrolytes after all isn't it?

L
I've been told that dunking in vinegar for a few minutes, allowing it to air-dry, then rinsing with 1:3 bleach/water produces a good patina. That's just hearsay, though. I haven;t tried it.