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<p>[QUOTE=&quot;GDJMSP, post: 3474117, member: 112&quot;]I&#039;m flattered you&#039;d say that Warren. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />&nbsp; </p><p><br /></p><p>But rest assured you&#039;re not alone with your question. It&#039;s actually a rather old question. I say that because some folks seem to think that microfiber cloths are something fairly new - but they aren&#039;t. They were first invented in the 1950&#039;s but were not readily available. They gained some popularity in the 70s for use in car detailing. And by the 90s well everybody had heard of them.</p><p><br /></p><p>But they&#039;re not cloth at all, in fact they are made of plastic. If ya look it up they are usually made of a mixture of polyester and polyamide or nylon. They&#039;re very good for polishing things, and for cleaning as well because dirt gets stuck in the tiny fibers. But it is their ability to polish that also makes them harmful to coins for anything that polishes well is going to be harmful to coins. That&#039;s because for something to be good at polishing it has to be abrasive. And microfiber is definitely that ! Plastic is hard stuff ! But, to the touch, it feels soft because the fibers are so fine.</p><p><br /></p><p>In a way it&#039;s kinda like it is when they polish dies, dies are polished with varying degrees of fineness of diamond paste - and there is little that is more abrasive than diamond. But when ya get the paste fine enough, as they do in the final stages of die polishing, it is the diamond paste that creates the mirrored finish on Proof coins. One of the primary differences between Proofs and business strike dies is that business strikes aren&#039;t polished to that extent. They stop a few stages before that.[/QUOTE]</p><p><br /></p>

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