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<p>[QUOTE="John Burgess, post: 4830867, member: 105098"]trying to make it darker..... hmmmm. shot in the dark, and test on some other copper you don't care about like the plated lincoln cents FIRST as an example, but I've had luck going shades of brown darker with baking soda dissolved completely in hot water then dabbing the surface with a cotton ball and letting it sit to dry for like an hour and see where it's at, then reapply, with sulfur of any sort you run the risk of going black instead of brown and I'm guessing you are looking for a deep chocolate brown color. this will tone it brown a little at the time, especially if you make a weak solution ( I suggest measuring everything in case you want to replicate or make adjustments to the recipe) maybe a teaspoon of Baking soda and a cup of water to start and test it to see how it does. when you are done rinse in distilled water, or rinse with distilled water between each treatment if you do it over a period of time and take breaks.</p><p><br /></p><p>the olive oil thing or mineral oil was really more about "protecting the surface" to keep dust particles off the coin or breathing spit. and people that oiled their coins would also need to clean them of the thick build up, the oil would work as a protective layer, but a bit easier to remove than lacquer. it's not really for toning or darkening or lightening coins.</p><p><br /></p><p>time, environmental factors, and luck is what it really takes, all artificial methods won't quite be the same result.</p><p><br /></p><p>And I will say this, humidity helps a lot to speed up toning. while dry environments it will happen at a snails pace. if you can make a</p><p>I mean if you could take a small container or jar and put a platform in it, and a couple drops of water and seal it and stick it on the windowsill, it would probably tone pretty quickly as the air in the jar gets real humid and damp, but this might lead to spotting from condensation. Something like this would speed it up on it's way to dark brown I think.</p><p><br /></p><p>whatever you do, test on stuff you don't care about and learn first, then take the gamble with as much knowledge as you can get with the piece you want to do.[/QUOTE]</p><p><br /></p>
[QUOTE="John Burgess, post: 4830867, member: 105098"]trying to make it darker..... hmmmm. shot in the dark, and test on some other copper you don't care about like the plated lincoln cents FIRST as an example, but I've had luck going shades of brown darker with baking soda dissolved completely in hot water then dabbing the surface with a cotton ball and letting it sit to dry for like an hour and see where it's at, then reapply, with sulfur of any sort you run the risk of going black instead of brown and I'm guessing you are looking for a deep chocolate brown color. this will tone it brown a little at the time, especially if you make a weak solution ( I suggest measuring everything in case you want to replicate or make adjustments to the recipe) maybe a teaspoon of Baking soda and a cup of water to start and test it to see how it does. when you are done rinse in distilled water, or rinse with distilled water between each treatment if you do it over a period of time and take breaks. the olive oil thing or mineral oil was really more about "protecting the surface" to keep dust particles off the coin or breathing spit. and people that oiled their coins would also need to clean them of the thick build up, the oil would work as a protective layer, but a bit easier to remove than lacquer. it's not really for toning or darkening or lightening coins. time, environmental factors, and luck is what it really takes, all artificial methods won't quite be the same result. And I will say this, humidity helps a lot to speed up toning. while dry environments it will happen at a snails pace. if you can make a I mean if you could take a small container or jar and put a platform in it, and a couple drops of water and seal it and stick it on the windowsill, it would probably tone pretty quickly as the air in the jar gets real humid and damp, but this might lead to spotting from condensation. Something like this would speed it up on it's way to dark brown I think. whatever you do, test on stuff you don't care about and learn first, then take the gamble with as much knowledge as you can get with the piece you want to do.[/QUOTE]
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