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<p>[QUOTE="Bronwen, post: 433436, member: 5833"]The problem is that some of the worst is inside little loops of metal where a Q-Tip won't fit. Think there are a few accessible, out of sight places where I can give it a go to see the result.</p><p><br /></p><p>Vinegar & calcium carbonate is not a happy mix. You could quickly mar shell or coral, even most 'lava', with it. I would never take the chance, with or without cling film. I have enough other methods in my armamentarium (as doctors like to say) to handle most jobs. Sometimes I have to accept that what I thought was grunge in a photo is a stain that cannot be removed without risk. It's rare.</p><p><br /></p><p>Nero is more of an oddity than anything. If he cannot be made pristine, no museum will be disappointed. Maybe I should send him to France for kyratisation. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie49" alt=":happy:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="Bronwen, post: 433436, member: 5833"]The problem is that some of the worst is inside little loops of metal where a Q-Tip won't fit. Think there are a few accessible, out of sight places where I can give it a go to see the result. Vinegar & calcium carbonate is not a happy mix. You could quickly mar shell or coral, even most 'lava', with it. I would never take the chance, with or without cling film. I have enough other methods in my armamentarium (as doctors like to say) to handle most jobs. Sometimes I have to accept that what I thought was grunge in a photo is a stain that cannot be removed without risk. It's rare. Nero is more of an oddity than anything. If he cannot be made pristine, no museum will be disappointed. Maybe I should send him to France for kyratisation. :happy:[/QUOTE]
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