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Is acid testing safe? What precautions should I take?
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<p>[QUOTE="-jeffB, post: 5245433, member: 27832"]I'm curious about this. I've seen fake silver items that were silver-plated <i>iron</i>, and they'd be a bit more than 20% light, but I'd catch them with a magnet before I bothered weighing them. Silver-plated copper would be about 15% light, right?</p><p><br /></p><p>I also assume that you mostly encounter smaller bars (one to ten ounces). For a hundred-ounce bar or kilos, would you start to worry about lead or tungsten plugs to bring up their density? Or at that size would you just drill it?[/QUOTE]</p><p><br /></p>
[QUOTE="-jeffB, post: 5245433, member: 27832"]I'm curious about this. I've seen fake silver items that were silver-plated [I]iron[/I], and they'd be a bit more than 20% light, but I'd catch them with a magnet before I bothered weighing them. Silver-plated copper would be about 15% light, right? I also assume that you mostly encounter smaller bars (one to ten ounces). For a hundred-ounce bar or kilos, would you start to worry about lead or tungsten plugs to bring up their density? Or at that size would you just drill it?[/QUOTE]
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