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<p>[QUOTE="Ownedbybear, post: 98279, member: 29"]Meh, all I can say is I have two hundred year old bits of baked earth that got used, washed up with detergent and hot water and still look good as ever. I can see this for museum quality Nantgarw, say, but not for the kind of stuff we're talking here.</p><p><br /></p><p>As to changes to "molecular structure", that's both bad chemistry and bad physics. Especially as we're discussing stuff fired at hundreds of degrees F or C, and also made in the days when harsh chemicals were de rigeur for cleaning.[/QUOTE]</p><p><br /></p>
[QUOTE="Ownedbybear, post: 98279, member: 29"]Meh, all I can say is I have two hundred year old bits of baked earth that got used, washed up with detergent and hot water and still look good as ever. I can see this for museum quality Nantgarw, say, but not for the kind of stuff we're talking here. As to changes to "molecular structure", that's both bad chemistry and bad physics. Especially as we're discussing stuff fired at hundreds of degrees F or C, and also made in the days when harsh chemicals were de rigeur for cleaning.[/QUOTE]
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