[meteorite-list] Issue with etching via ferric choride

From: R N Hartman <rhartman04_at_meteoritecentral.com>
Date: Thu, 29 Oct 2009 16:33:46 -0700
Message-ID: <94E6D806D15947D1A52DA26AB3F127C3_at_DBZC5NB1>

Hello McCartney (and all):

Yes, the etch happens very quickly and you need to terminate it by a quick
wash under running water. Follow with a rinse in distilled water if you
want to but we never do and it works fine. You don;t have to neutralize it,
just wash it off VERY FAST. In fact, I use running water to slow down the
process as I am doing it, especially if I need to etch one section of a
surface more. There is a bit of a technique - just practice and you will do
well. If yo are getting staining your washing is incomplete.

Ron Hartman

----- Original Message -----
From: "McCartney Taylor" <mccartney at blackbearddata.com>
To: "MeteoriteList" <meteorite-list at meteoritecentral.com>
Sent: Thursday, October 29, 2009 2:58 PM
Subject: [meteorite-list] Issue with etching via ferric choride


> Having a bit of a problem on some etch jobs and having to re-etch a few
> specimens.
>
> How do you rinse/neutralize your ferric after the etch? I'm getting
> remnant staining and sometimes corrosion. I'm doing something wrong.
>
> Any ideas?
>
> -mt
>
>
>
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Received on Thu 29 Oct 2009 07:33:46 PM PDT