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<p>[QUOTE=&quot;Daenegger, post: 2132470, member: 74299&quot;]Acetic acetic and I&#039;m assuming acetone (I don&#039;t use it since its vapor point is too high to apply heat to the coins and expand the metal) leaves a water repellent coating on the coins.&nbsp; </p><p><br /></p><p>Kind of like WD-40 does with tools.&nbsp; It inhibits bacterial growth and water penetration when it dries because it is a non-polar solvent despite being water soluble.&nbsp; It leaves a non-polar residue which is repulsive to water because water is polar.&nbsp; Your coin will not become and algae farm like so many do/are.</p><p><br /></p><p>As to who isn&#039;t seeing it; it&#039;s the professional collectors at crowds and numastists at grading companies.&nbsp; </p><p><br /></p><p>It&#039;s 100% possible to polish the surface of a coin and improve the appearance of a coin while undoing some of the original damage done.&nbsp; You just literally have to not leave fingerprints. </p><p><br /></p><p>The term I originally used was micro polish which implies (from Websters): </p><ol> <li>A scale of physical consideration or of bounds having a characteristic dimension typically ranging from 1 to 999 µm (under 1 mm)</li> </ol><p>No matter how hard you try you aren&#039;t going to see that at a glance. Cope.&nbsp; </p><p><br /></p><p>Its dependent on how soft your polishing agent is, how random its movements is across the coin, how the pressure is applied, whether or not it is constantly applied and the amount of pressure you are applying.</p><p><br /></p><p>I&#039;m not sitting there with a tool of some sort polishing the coin.&nbsp; I&#039;m highjacking a natural process and putting it to work.&nbsp; The coins I process that had flaws have them reduced slightly.&nbsp; Improper cleaning becomes just cleaning etc...&nbsp; The coins with clean fields maintain clean fields. </p><p><br /></p><p>Not just possible but happening.[/QUOTE]</p><p><br /></p>

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