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| Joined: | Thu Mar 26th, 2009 |
| Location: | Colorado USA |
| Posts: | 10254 |
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Nice, though I disagree with you guys accelerating the patina process and would love to see how this process occurs naturally over time. Just how much use and time needs to pass before one would see patina in nature?
Thanks Mark!
Yes...I agree, in a perfect world I would be patient and let the patina develop naturally over time, but according to what I have read (and it obviously depends on the specific metal and environmental factors), patina takes YEARS to develop naturally.
It seems the color of the patina also depends on the type of exposure and elements. A wiki search of patina adds some more detailed information to this: "Patination composition varies with the reacted elements and these will determine the color of the patina. For copper alloys, such as bronze, exposure to chlorides leads to green, while sulfur compounds (such as "liver of sulfur") tend to brown. The basic palette for patinas on copper alloys includes chemicals like ammonium sulfide (blue-black), liver of sulfur (brown-black), cupric nitrate (blue-green) and ferric nitrate (yellow-brown). For artworks, patination is often deliberately accelerated by applying chemicals with heat. Colors range from matte sandstone yellow to deep blues, greens, whites, reds and various blacks."
The egg process that we are using is definitely in the 'sulfer compound' regime, and I like the fact that wiki is stating that tends to lead to a brown patina...which is really what I'm after.
Here are a couple shots after a second exposure to the egg process. I realize that this is not for everyone, and know that some don't care for it at all, but I'm really liking it!!!
