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<p>[QUOTE=&quot;Insider, post: 4636571, member: 24314&quot;]Oldhoopster, posted: &quot;What I&#039;m reading in your post says that since lamination s are common in improperly alloyed metals and since there is a lamination on the OPs coin, it must be improperly mixed.&nbsp; [<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie11" alt=":rolleyes:" unselectable="on" unselectable="on" /> <i><span style="color: #660033">Not at all.&nbsp; What I said was since they are very common on alloy mix errors and 1-in-a-million (so they could possibly happen) associated with a roller mark (I don&#039;t recall ever seeing this) then the evidence on the coin SHOULD SUPPORT my opinion.]</span></i> And your supporting information is that an error expert has never seen a lamination on a roller marked coin?&nbsp; [<span style="color: #660033"><i>Yes, that&#039;s both the expert and me</i></span>] And the weight of that information [<i><span style="color: #660033">Combined with everything else I see on the coin</span></i>] is enough to tip the conclusions towards your side of the discussion? Is that correct, or did I miss something?&quot;&nbsp; <i><span style="color: #660033">I think you get it.&nbsp; Now, I need to be refuted or agreed with.&nbsp; I want my questions answered.&nbsp; </span></i></p><p><br /></p><p>&quot;C&#039;mon. At least I tried to back up my comments with some science and chemistry.&quot;</p><p><br /></p><p>&quot;I don&#039;t understand why a coin with roller marks couldn&#039;t also have a lamination. [<i><span style="color: #660033">I don&#039;t either.&nbsp; Any coin or mint error can have a lamination caused by multiple reasons.]</span></i> The mechanism for the formation of laminations occurs during the ingot casting process. Entrapped gas or poorly mixed alloys.&nbsp; Wouldn&#039;t this be independent of the rolling process?&quot;&nbsp; [<i><span style="color: #660033">I don&#039;t think so.&nbsp; While making the strip, gas and impurities that cause laminations my be removed and impurities may also be added.]</span></i></p><p><br /></p><p>&quot;Also, Could you please offer an explanation/hypothesis on how a lamination can cut across grain boundaries of dissimilar compositions yet show no evidence of following the grain boundary?&nbsp; [<i><span style="color: #660033">I&#039;ve been looking for images in my computer files that will support my opinion and blow folks mind!&nbsp; I have a day job too.&nbsp; I just made an image of a streaked cent edge showing how deep the improper alloy goes into the coin!&nbsp; Cannot find it yet.] </span></i>It doesn&#039;t make sense for an unbonded area to be intragranular when the grain boundaries of dissimilar compositions would likely be the weakest point.&nbsp; And if the grain boundaries are strong enough so that the unbonded area is intragranular, how did the void that initiated the lamination form in the first place?&quot;&nbsp; [<i><span style="color: #660033">LOL, I have found that things happen all the time that don&#039;t make sense.&nbsp; Therefore, my opinion still stands for now. I&#039;ll need to give it some thought.]</span></i>[/QUOTE]</p><p><br /></p>

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