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<p>[QUOTE=&quot;Pete Apple, post: 3583094, member: 103982&quot;]<b>I asked the Mint a question about the effects of striking pressure on Rockwell test Marks on a planchet.</b></p><p><br /></p><p><b>Their answer is a bit confusing, but I think their answer is:</b></p><p><br /></p><p>·&nbsp; &nbsp; &nbsp; &nbsp; <b>Tested blanks are scrapped</b></p><p><br /></p><p>·&nbsp; &nbsp; &nbsp; &nbsp; <b>The Mint has considered allowing the tested blanks to enter coining production, but has not because they could not be certain that the Test Marks would be obliterated.&nbsp; </b></p><p><br /></p><p>·&nbsp; &nbsp; &nbsp; &nbsp; <b>Whether or not they would be obliterated would depend on the design of the coin, the location of the test and the orientation of the planchet in the press.</b></p><p><br /></p><p><b>Am I reading the answer correctly? (I am thinking the “risk outweighs the benefit” means that the risk of allowing the tested blank enter production – and have a test mark survive production – outweighs the benefit of scrapping the tested samples.)</b></p><p><br /></p><p><b>Here was my question:</b></p><p><br /></p><p><b>“I know that the Mint does Rockwell Testing on selected planchets and a think that such a planchet is discarded after testing.</b></p><p><br /></p><p><b>My question is: If somehow such a planchet were struck, would the strike obliterate the Rockwell Test Mark on the coin?</b></p><p><br /></p><p><b>Do you have the ability to actually perform such an experiment? If so, I would appreciate knowing the results!”</b></p><p><br /></p><p>&nbsp;</p><p><br /></p><p><b>Here is the answer:</b></p><p><br /></p><p><b>“The in-process hardness checks are considered destructive tests, so any blanks that are tested get scrapped. There has been exploration of recovering those blanks, but depending on the location of the indentation, the design of the coin, and the orientation at which the indented blank would enter the press, there’s no guarantee that the indent would strike out. Lastly, the hardness samples represent a miniscule amount compared to full production quantities, so the risk outweighs the benefit.”</b>[/QUOTE]</p><p><br /></p>

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