[meteorite-list] Issue with etching via ferric choride

From: Mark Bowling <minador_at_meteoritecentral.com>
Date: Thu, 29 Oct 2009 22:33:50 -0700 (PDT)
Message-ID: <924357.71662.qm_at_web54402.mail.re2.yahoo.com>

Eric,

I would really be interested in reading it. Be sure to include some safety guidelines. Today I just read about a guy who messed up his health bigtime doing some welding work. Just one whiff of some minor looking fumes. I don't have the article to pass along right now - it's at work. I know people who handle acids and they say ferric is one of the nastiest they use, but maybe it's a lot more concentrated than what McCartney is talking about though.

I'd hate to see someone get hurt by because they don't realize the hazards. So I'd recommend everybody familiarize themselves with the MSDS before handling anything like that. It's a little tough in an emergency trying to figure out what to do...

Happy etching,
Mark
Vail, AZ

--- On Thu, 10/29/09, Meteorites USA <eric at meteoritesusa.com> wrote:

> From: Meteorites USA <eric at meteoritesusa.com>
> Subject: Re: [meteorite-list] Issue with etching via ferric choride
> To: "R N Hartman" <rhartman04 at earthlink.net>
> Cc: mccartney at blackbearddata.com, "MeteoriteList" <meteorite-list at meteoritecentral.com>
> Date: Thursday, October 29, 2009, 5:04 PM
> 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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Received on Fri 30 Oct 2009 01:33:50 AM PDT