[meteorite-list] Issue with etching via ferric choride

[Meteorites USA]

Hi McCartney, Ron, Listees,

This might actually be a good topic for an article on the new Meteorite 
Wiki. Perhaps an experienced and generous person would be willing to 
extend the time to write an extensive and detailed article on it 
including information on preservation and stabilization. I'm sure others 
would love to learn the process. I would be will to add a few of my 
photos to the document and release them into the public domain for all 
use. What do you think?

Regards,
Eric Wichman
Meteorites USA





R N Hartman wrote:
> 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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