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Best conditions for allowing old copper to re-tone?
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<p>[QUOTE="desertgem, post: 1450004, member: 15199"]<p style="text-align: left"><span style="color: #000000"></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000">No, the fingers have very few oil glands ( Humans with slippery hands wouldn't survive well evolution wise. The fingerprints are initiated by sweat ( even insensible ( not visible) in the grooves. Bad Idea.</span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000">Some Molasses is treated with sulfur dioxide as a preservative, so you are just using sulfur. Much molasses is not , so you would just have a sticky coin. Using old fashioned match heads, Sulfur containing acne creams, Sodium sulfide and acetic acid, Deller's sulfur flowers ( flours) intended for garden soil, etc. is unpredictable and most likely will leave the surface much worse than now, so you have to dip again (bad) and try darkener again ( more bad) .</span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000">Besides use of any of these methods with intention to color the surfaces of the coin are artificial toning ( Oh my gosh, did I raise that argument again??) Even putting into a manila envelope with intent would fit in there by many. Besides once the toning starts, you have to find ways to stop it . Chemistry comes in handy.</span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p><p>[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 1450004, member: 15199"][LEFT][COLOR=#000000] No, the fingers have very few oil glands ( Humans with slippery hands wouldn't survive well evolution wise. The fingerprints are initiated by sweat ( even insensible ( not visible) in the grooves. Bad Idea. Some Molasses is treated with sulfur dioxide as a preservative, so you are just using sulfur. Much molasses is not , so you would just have a sticky coin. Using old fashioned match heads, Sulfur containing acne creams, Sodium sulfide and acetic acid, Deller's sulfur flowers ( flours) intended for garden soil, etc. is unpredictable and most likely will leave the surface much worse than now, so you have to dip again (bad) and try darkener again ( more bad) . Besides use of any of these methods with intention to color the surfaces of the coin are artificial toning ( Oh my gosh, did I raise that argument again??) Even putting into a manila envelope with intent would fit in there by many. Besides once the toning starts, you have to find ways to stop it . Chemistry comes in handy. [/COLOR][/LEFT][/QUOTE]
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