[meteorite-list] Issue with etching via ferric choride

[R N Hartman]

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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