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Treasure Hunting
Cleaning Your Finds
Deep fried coins and other cleaning methods
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<blockquote data-quote="Heatho" data-source="post: 263242" data-attributes="member: 487"><p>The acid foil reaction works very well, just tried it this morning on some coins and rings that I couldn't clean any other way. I just substituded the tartaric acid to citric acid and it worked well. Most of the coins were already toasted from being in the ocean but a small silver ring that was not already pitted came up a real treat.</p><p></p><p>The reaction is quite exothermic almost hot enough to burn so be careful, quite a lot of rotten egg (hydrogen sulphide) gas is expelled during the reaction too and it almost dissolves the foil used. </p><p></p><p>Before</p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/487/1469244053_20160613_135943.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>After</p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/487/1469244053_20160723_131312.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Heatho, post: 263242, member: 487"] The acid foil reaction works very well, just tried it this morning on some coins and rings that I couldn't clean any other way. I just substituded the tartaric acid to citric acid and it worked well. Most of the coins were already toasted from being in the ocean but a small silver ring that was not already pitted came up a real treat. The reaction is quite exothermic almost hot enough to burn so be careful, quite a lot of rotten egg (hydrogen sulphide) gas is expelled during the reaction too and it almost dissolves the foil used. Before [img]https://www.prospectingaustralia.com/forum/img/member-images/487/1469244053_20160613_135943.jpg[/img] After [img]https://www.prospectingaustralia.com/forum/img/member-images/487/1469244053_20160723_131312.jpg[/img] [/QUOTE]
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Treasure Hunting
Cleaning Your Finds
Deep fried coins and other cleaning methods
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