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<p>[QUOTE=&quot;Conder101, post: 4700675, member: 66&quot;]Good advice for lead or tin solder which melt around 500 F.&nbsp; Jewelry is done with silver or gold solder and melts between 1100 and 1500 F.&nbsp; You have to use a torch to melt them and I haven&#039;t seen a vacuum that can take that punishment.&nbsp; And wire braid just melts at those temperatures.</p><p><br /></p><p>The Muriatic or nitric acid method would work on the gold coin as those acids really won&#039;t react much with the coin, but they will attack the silver coin.&nbsp; Don&#039;t mix the two on the gold coin because then you get aqua regia which WILL dissolve gold.&nbsp; The acid won&#039;t work if gold solder is used.</p><p><br /></p><p>If you want to try Muriatic acid as a do it yourself on the silver coin, dip it in some melted wax to coat the whole thing, then scratch the wax off just the solder and then soak it in the acid.&nbsp; The wax will protect the coin and it will only attack the exposed solder.&nbsp; But once the acid reaches the coin metal it will attack that too.&nbsp; So as coin metal is exposed as the solder is removed you will need to remove the coin rinse it, dry it apply wax again and the once again scratch the wax off just the solder.&nbsp; Doing that in successive stages you should be able to remove most or all the solder with out doing a lot of damage tot he coin.&nbsp; When the solder is all gone, put the coin in hot water, 150+ F (a brief boil would probably be good) and leave it for a little bit then just let the water cool back down to room temperature.&nbsp; The wax will melt off the coin and being lighter, float to the top of the water.&nbsp; Once it cools the wax will re-solidify on the top of the water and you can then remove the coin.[/QUOTE]</p><p><br /></p>

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