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<p>[QUOTE=&quot;Spark1951, post: 3263019, member: 90692&quot;]The &#039;18 is rough...maybe vg8-f12, but with the condition being a mix of verdigris/corrosion and wear, you have a job on your hands.&nbsp; Follow our advice, go slow, think it out.&nbsp; </p><p><br /></p><p>If you use any solutions make sure you use diluted ones, weak to start out with fastidious monitoring and short time periods. The put it to a loupe and reassess.&nbsp; You can then increase the strength of your solutions and time periods as you go and avoid ruining it.&nbsp; Know when to stop.</p><p><br /></p><p>Never use any type of acid solution, although [USER=71723]@V. Kurt Bellman[/USER]&#039;s&nbsp; dip solution does work.&nbsp; You still have to monitor how long the coin is in his solution, because he uses a tiny amount of thiourea in the solution, which is an acid, and is the active ingredient in the Tarn-X product...Spark[/QUOTE]</p><p><br /></p>

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