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What happens to a "woody" that is acid etched?
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<p>[QUOTE="desertgem, post: 2713195, member: 15199"]I admit, it appears etched. But direct correlation to a previous 'woody' pattern of the etching is needed evidence of the link of cause and effect. I think insider produced excellent photos of the etching. </p><p> Although my metallurgy is limited, you say:</p><p><br /></p><p><br /></p><p><br /></p><p><font size="4"> But the cast ingot is multiples of thickness to the planchet which I assume is flattened to size by rollers, and then punched out. Since rolling would cause lateral as well as vertical movement of the grains wouldn't most coins shows at least some of similar variations of the grains? Press pressure on the planchet I don't know, just asking as to understand and gain knowledge. </font></p><p><font size="4"><br /></font></p><p><font size="4">I agree bad mixing could be the cause, it was always assumed to be, but to my knowledge never acknowledge by the mint or experimentation. Insider, any deeper sources? Jim</font>[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 2713195, member: 15199"]I admit, it appears etched. But direct correlation to a previous 'woody' pattern of the etching is needed evidence of the link of cause and effect. I think insider produced excellent photos of the etching. Although my metallurgy is limited, you say: [SIZE=4] But the cast ingot is multiples of thickness to the planchet which I assume is flattened to size by rollers, and then punched out. Since rolling would cause lateral as well as vertical movement of the grains wouldn't most coins shows at least some of similar variations of the grains? Press pressure on the planchet I don't know, just asking as to understand and gain knowledge. I agree bad mixing could be the cause, it was always assumed to be, but to my knowledge never acknowledge by the mint or experimentation. Insider, any deeper sources? Jim[/SIZE][/QUOTE]
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What happens to a "woody" that is acid etched?
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