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<p>[QUOTE=&quot;gsimonel, post: 4523745, member: 82549&quot;]Done correctly, electrolysis will strip a coin down to bare metal. Usually this is a bad idea. But sometimes coins are so heavily corroded that it is the only way to see what is underneath.</p><p><br /></p><p>There are many websites that explain how to use electrolysis. Here are two:</p><p><a href="https://www.instructables.com/id/How-to-Clean-Coins-With-Electrolysis/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.instructables.com/id/How-to-Clean-Coins-With-Electrolysis/" rel="nofollow">https://www.instructables.com/id/How-to-Clean-Coins-With-Electrolysis/</a></p><p><a href="https://department.monm.edu/classics/COINS/data/cleaning/electrolysis.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://department.monm.edu/classics/COINS/data/cleaning/electrolysis.htm" rel="nofollow">https://department.monm.edu/classics/COINS/data/cleaning/electrolysis.htm</a></p><p><br /></p><p>Unfortunately, both sites say to add salt to the water. ERRRRNNNTT! Do NOT use salt as your solvent. It will turn the solution acidic, which will damage bronze coins. Use sodium carbonate (washing soda). Or, if you must use salt, periodically add some baking soda to neutralize the solution.[/QUOTE]</p><p><br /></p>

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