[meteorite-list] etching?

From: william anderson <castlewh1_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:50 2004
Message-ID: <20031117130828.2805.qmail_at_web41608.mail.yahoo.com>

Just had a bizarre thought that I have no answer to.
Has anyone ever tried bringing out the widmanstatten
pattern with a chemical free etch? I was remembering
a fellow who liked to "frost" the busts of coins using
a scaled down sandblasting outfit. He would mask the
unetched areas with rubber cement. However if the
taenite and kamacite have different hardnesses, the
etch would be differential, so the pattern would
emerge, and would happen without much fuss? Who knows
what it would look like, but the visual desirability
of an chemical etch might just be borne of no other
alternatives. At the least there would be no great
need for neutralizing the chems away. Just a random
thought. Nice day to you all.
Bill Anderson

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Received on Mon 17 Nov 2003 08:08:28 AM PST