[meteorite-list] etching solution

From: Howard Wu <freewu2000_at_meteoritecentral.com>
Date: Thu Apr 22 10:21:07 2004
Message-ID: <20030721173414.64220.qmail_at_web9302.mail.yahoo.com>

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Back in my coin collecting days I use to use a product similar to this to read the worn off dates on Buffallo nickles. A few drops were put on the blank spot in a few seconds a weak date could be read. Can't remember if it contained a nickle salt or an iron salt solution. Any coin collecting list member have any familarity with this?
 
Howard Wu

mark ford <markf_at_ssl.gb.com> wrote:

H List,

My experience with Ferric Chloride as an etchant ..

Ferric Chloride works much better than Nitric in my opinion, and seems
to be more stable too! - I was pretty skeptical at first, about putting
a Chloride chemical onto an 'Iron' but I have tried it many times and it
works well the detail is superb!


Acouple of things to bear in mind..

Make sure the Ferric solution is not too concentrated, and only ever use
the etchant once, then discard.

You must be sure to wash all the ferric off afterwards though .otherwise
it will tarnish and go dull.

Also remember to wash the Iron in Alcohol before you etch (to degrease)
and after you etch to remove water. Then dry in a warm oven.

Wear Gloves ar you will get stained yellow!!!



Just my .2 Euros worth..

Mark Ford


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<DIV>
<DIV>Back in my coin collecting days I use to use a product similar to this to read the worn off dates on Buffallo nickles. A few drops were put on the blank spot in a few seconds a weak date could be read. Can't remember if it contained a nickle salt or an iron salt solution. Any coin collecting list member have any familarity with this?</DIV>
<DIV>&nbsp;</DIV>
<DIV>Howard Wu<BR><BR><B><I>mark ford &lt;markf_at_ssl.gb.com&gt;</I></B> wrote:</DIV>
<DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid; WIDTH: 100%"><BR>H List,<BR><BR>My experience with Ferric Chloride as an etchant ..<BR><BR>Ferric Chloride works much better than Nitric in my opinion, and seems<BR>to be more stable too! - I was pretty skeptical at first, about putting<BR>a Chloride chemical onto an 'Iron' but I have tried it many times and it<BR>works well the detail is superb!<BR><BR><BR>Acouple of things to bear in mind..<BR><BR>Make sure the Ferric solution is not too concentrated, and only ever use<BR>the etchant once, then discard.<BR><BR>You must be sure to wash all the ferric off afterwards though .otherwise<BR>it will tarnish and go dull.<BR><BR>Also remember to wash the Iron in Alcohol before you etch (to degrease)<BR>and after you etch to remove water. Then dry in a warm oven.<BR><BR>Wear Gloves ar you will get stained yellow!!!<BR><BR><BR><BR>Just my .2 Euros worth..<BR><BR>Mark
 Ford<BR><BR><BR>______________________________________________<BR>Meteorite-list mailing list<BR>Meteorite-list_at_meteoritecentral.com<BR>http://www.pairlist.net/mailman/listinfo/meteorite-list</BLOCKQUOTE></DIV></DIV><p><hr size=1><font face="Arial" size="2">Want to chat instantly with your online friends? <a href="http://uk.rd.yahoo.com/mail/tagline_messenger/*http://uk.messenger.yahoo.com/"><b>Get the FREE Yahoo!
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Received on Mon 21 Jul 2003 01:34:14 PM PDT