[meteorite-list] etching?
From: harlan trammell <skyrox_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:50 2004 Message-ID: <BAY1-F751jr0W3Qx4xV0000f93d_at_hotmail.com> <html><div style='background-color:'><DIV> <P>very interesting- if you polish a skyrock with a soft lap , the pattern is often visible<BR><BR></P></DIV> <DIV></DIV>>From: william anderson <CASTLEWH1_at_YAHOO.COM> <DIV></DIV>>To: meteorite-list_at_meteoritecentral.com <DIV></DIV>>Subject: [meteorite-list] etching? <DIV></DIV>>Date: Mon, 17 Nov 2003 05:08:28 -0800 (PST) <DIV></DIV>> <DIV></DIV>>Just had a bizarre thought that I have no answer to. <DIV></DIV>>Has anyone ever tried bringing out the widmanstatten <DIV></DIV>>pattern with a chemical free etch? I was remembering <DIV></DIV>>a fellow who liked to "frost" the busts of coins using <DIV></DIV>>a scaled down sandblasting outfit. He would mask the <DIV></DIV>>unetched areas with rubber cement. However if the <DIV></DIV>>taenite and kamacite have different hardnesses, the <DIV></DIV>>etch would be differential, so the pattern would <DIV></DIV>>emerge, and would happen without much fuss? Who knows <DIV></DIV>>what it would look like, but the visual desirability <DIV></DIV>>of an chemical etch might just be borne of no other <DIV></DIV>>alternatives. At the least there would be no great <DIV></DIV>>need for neutralizing the chems away. Just a random <DIV></DIV>>thought. Nice day to you all. <DIV></DIV>>Bill Anderson <DIV></DIV>> <DIV></DIV>>__________________________________ <DIV></DIV>>Do you Yahoo!? <DIV></DIV>>Protect your identity with Yahoo! Mail AddressGuard <DIV></DIV>>http://antispam.yahoo.com/whatsnewfree <DIV></DIV>> <DIV></DIV>>______________________________________________ <DIV></DIV>>Meteorite-list mailing list <DIV></DIV>>Meteorite-list_at_meteoritecentral.com <DIV></DIV>>http://www.pairlist.net/mailman/listinfo/meteorite-list <DIV></DIV></div><br clear=all><hr> <a href="http://g.msn.com/8HMAENUS/2746??PS=">Customize MSN Messenger with backgrounds, emoticons and more.</a> </html> Received on Mon 17 Nov 2003 05:17:31 PM PST |
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