[meteorite-list] etching campos?

From: Bill Mason III <bmason3_at_meteoritecentral.com>
Date: Thu Apr 22 10:25:41 2004
Message-ID: <000701c31d7e$3ea9b520$0c02a8c0_at_ce1.client2.attbi.com>

Jim,
    I find that the longer I let the etch stay on the cut the darker the
contrast becomes. Important: the quality of your surface finish will
(fineness of grind) give you better results. I go grit size
80,120,220,400,600,1200.
    Bill Mason

----- Original Message -----
From: "Tom aka James Knudson" <knudson911_at_frontiernet.net>
To: "meteorite-list" <meteorite-list_at_meteoritecentral.com>
Sent: Sunday, May 18, 2003 2:42 PM
Subject: [meteorite-list] etching campos?


> Hello List, It is lonely in here lately, guess we need a new fall. But,
> anyways, I etched my first iron. It is a campo end cut. I thought I would
> try Ferric chloride on it. Norton talks good about it in his newest book.
I
> applied the Ferric chloride and within 30 seconds patterns appeared so I
> stopped it right then. I don't know if this was the right thing to do. Is
> that when you stop or should it go longer to get a better etch?
> Thanks, Tom
> The proudest member of the IMCA 6168
>
>
>
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Received on Sun 18 May 2003 04:44:14 PM PDT