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<p>[QUOTE="Kentucky, post: 3540848, member: 33176"]My only real success with copper was using potassium hydroxide which was the basis of one of the older gone and lamented coin care products. Sodium hydroxide (lye) should have a similar effect, but be CAREFUL since these strong bases can disslove your skin. Use only dilute solutions and rinse your hands thoroughly after using. Perhaps start with some soaks in sodium bicarbonate first and see what that does (bicarbonate of soda, baking soda). Let us know how it goes.[/QUOTE]</p><p><br /></p>
[QUOTE="Kentucky, post: 3540848, member: 33176"]My only real success with copper was using potassium hydroxide which was the basis of one of the older gone and lamented coin care products. Sodium hydroxide (lye) should have a similar effect, but be CAREFUL since these strong bases can disslove your skin. Use only dilute solutions and rinse your hands thoroughly after using. Perhaps start with some soaks in sodium bicarbonate first and see what that does (bicarbonate of soda, baking soda). Let us know how it goes.[/QUOTE]
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