Message:

<p>[QUOTE=&quot;Kentucky, post: 2153910, member: 33176&quot;]Let&#039;s get chemical.&nbsp; Since your coins are UNC, you REALLY don&#039;t want to rub them at all.&nbsp; We are then left with solvents.&nbsp; Acetone is usually great, but sometimes it doesn&#039;t work.&nbsp; In solvents it is usually a case of polarity.&nbsp; Since acetone is somewhat polar, you should try a non-polar alternative.&nbsp; Most common would be hexane or toluene (or xylene if this is too stinky).&nbsp; Mineral spirits might work.&nbsp; Failing this, the only other thing I could think of would be to attack it with acid or base, and that might hurt the metal.&nbsp; BTW, here is a listing of polarities:&nbsp; <a href="http://macro.lsu.edu/howto/solvents/Polarity%20index.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://macro.lsu.edu/howto/solvents/Polarity%20index.htm" rel="nofollow">http://macro.lsu.edu/howto/solvents/Polarity index.htm</a>[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in