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<p>[QUOTE=&quot;kanga, post: 4695365, member: 9270&quot;]So far the best suggestion I can find online for cleaning zinc is <b>white vinegar</b>.</p><p>It&#039;s mildly acidic (acetic acid).</p><p>Soaking time is measured in hours (6 to 12).</p><p>Whether it works on zinc oxide (ZnO) I don&#039;t know.</p><p><br /></p><p>I&#039;m okay with doing that; I&#039;ll give it a try.</p><p>There are plenty of cheap zinc coins out there.</p><p><br /></p><p>But then comes the process of protecting the coin&#039;s surface.</p><p>The best suggestion I&#039;ve seen is <b>Japanese lacquer</b>.</p><p>But that&#039;s a &quot;Huh?&quot;</p><p>Can&#039;t find any source for it, not even a reference about it.</p><p>I&#039;m probably going to go with a quality clear lacquer.[/QUOTE]</p><p><br /></p>

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