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<p>[QUOTE=&quot;GDJMSP, post: 1622763, member: 112&quot;]Yes, they do anneal cent planchets. Left over copper particles inside the furnace are what cause sintered planchets.</p><p><br /></p><p>And 19Lyds - the conveyor belt can stop ya know. Or, it can dump the coins off onto trays. The entire point is that the coins have to lay flat, not on top of each other or tossed in a drum, to be heated properly &amp; quickly. And as I said, the only way that copper particles can settle on the planchets is if they are laying flat. And you ever see a sintered planchet Proof ? Me neither.[/QUOTE]</p><p><br /></p>

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