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Old December 29, 2012, 10:26 AM   #12
old roper
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Join Date: June 11, 2007
Posts: 1,500
I think when you look at his CHE toward the bottom of the article. this is his comment

To determine the amount of permanent case head expansion, node 21905 was selected and the increase in diameter at this location is plotted. The plots show the case head expansion during firing and finally, the permanent increase in diameter after firing. The location at node 20260 typically has about 0.0005" less expansion.
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