[meteorite-list] Issue with etching via ferric choride

[Linton Rohr]

It sure would, Eric.
I should point out though, that there is a PowerPoint presentation available 
on the subject under the downloads category on the IMCA site. It is entitled 
Meteorites 301, and is a follow-up to 201 and 101, as you would expect. I 
just downloaded them all last week, and may use the first two for a upcoming 
Boy Scout presentation.
I should also point out that I have not *yet* done any etching, so the 
contents of this PowerPoint program pretty much match the extent of my 
knowledge on the subject! ;^)
Linton

----- Original Message ----- 
From: "Meteorites USA" <eric at meteoritesusa.com>
To: "R N Hartman" <rhartman04 at earthlink.net>
Cc: <mccartney at blackbearddata.com>; "MeteoriteList" 
<meteorite-list at meteoritecentral.com>
Sent: Thursday, October 29, 2009 5:04 PM
Subject: Re: [meteorite-list] Issue with etching via ferric choride



> 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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>

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