[meteorite-list] Water cutting question

From: Steve Dunklee <steve.dunklee_at_meteoritecentral.com>
Date: Thu, 22 Nov 2012 01:42:06 -0800 (PST)
Message-ID: <1353577326.17107.YahooMailClassic_at_web121305.mail.ne1.yahoo.com>

boiling tap water and adding baking soda like a teaspoon a gallon after boiling, should remove all the nasty corosive stuff. a good non corosive cutting fluid with good ccooling can be made with corn oil, pine sol or spic n span, and water. flouride or chlorine are realy not good to have in any cutting solution if you want rust prevention. the boiling should remove both. Plus if you have to do a lot of cutting, the corn oil solution is not considered a hazardous waste and is less likely to kill you if you dont use an air mask.
Cheers
Steve Dunklee

--- On Wed, 11/21/12, Robert Verish <bolidechaser at yahoo.com> wrote:

> From: Robert Verish <bolidechaser at yahoo.com>
> Subject: Re: [meteorite-list] Water cutting question
> To: "Michael Mulgrew" <mikestang at gmail.com>, "Ed Deckert" <edeckert at triad.rr.com>, "Mendy Ouzillou" <ouzillou at yahoo.com>
> Cc: "meteoritelist meteoritelist" <meteorite-list at meteoritecentral.com>
> Date: Wednesday, November 21, 2012, 9:02 AM
> Hello Mendy, Mike, Ed, and All,
>
> I've been told that "chloramine" doesn't out-gas like
> chlorine does.?
> We in California have to cognizant of this additive to our
> drinking water.
>
> http://www.purewaterproducts.com/articles/removing-chloramines
>
> http://www.chloramine.org/chloraminefacts.htm
>
> This Subject comes up every so often on this List, and the
> oft-repeated disclaimer is "that readers new to the List
> should run a search in the List-Archives" on this subject
> for a review of past comments and observations.
>
> Bob V.
>
> --- On Tue, 11/20/12, Mendy Ouzillou <ouzillou at yahoo.com>
> wrote:
>
> > From: Mendy Ouzillou <ouzillou at yahoo.com>
> > Subject: Re: [meteorite-list] Water cutting question
> > To: "Michael Mulgrew" <mikestang at gmail.com>,
> "Ed Deckert" <edeckert at triad.rr.com>
> > Cc: "meteoritelist meteoritelist" <meteorite-list at meteoritecentral.com>
> > Date: Tuesday, November 20, 2012, 3:58 PM
> > Seems to me that if you recirculate
> > the water, all that out-gassing is for naught as the
> blade
> > will re-aerate the water.
> >
> > >
> > >Mendy
> > >
> > >
> > >
> > >
> > >
> > >
> > >>________________________________
> > >> From: Michael Mulgrew <mikestang at gmail.com>
> > >>To: Ed Deckert <edeckert at triad.rr.com>
> >
> > >>Cc: meteoritelist meteoritelist <meteorite-list at meteoritecentral.com>
> >
> > >>Sent: Tuesday, November 20, 2012 3:23 PM
> > >>Subject: Re: [meteorite-list] Water cutting
> > question
> > >>
> > >>Ed and list,
> > >>
> > >>I do not know of an exact way to calculate, but
> a
> > few minutes at
> > >>around 29 inches Hg of vacuum (sea level),
> > especially on a hot plate
> > >>and with a little aggitation, will remove about
> all
> > of the dissolved
> > >>gasses.
> > >>
> > >>Michael in so. Cal.
> > >>
> > >>On Tue, Nov 20, 2012 at 2:45 PM, Ed Deckert
> <edeckert at triad.rr.com>
> > wrote:
> > >>>
> > >>> Hi Michael,
> > >>>
> > >>> Is there a method to calculate how long
> to
> > leave a specific volume of water
> > >>> at a specific vacuum (inches Hg) to ensure
> that
> > it is degassed?
> > >>>
> > >>> Thanks,
> > >>> Ed
> > >>>
> > >>> ----- Original Message ----- From:
> "Michael
> > Mulgrew" <mikestang at gmail.com>
> > >>> To: "Pete Pete" <rsvp321 at hotmail.com>
> > >>> Cc: "meteoritelist meteoritelist" <meteorite-list at meteoritecentral.com>
> > >>> Sent: Tuesday, November 20, 2012 5:08 PM
> > >>> Subject: Re: [meteorite-list] Water
> cutting
> > question
> > >>>
> > >>>
> > >>>> Pete and list,
> > >>>>
> > >>>> Unfortunately the method you use does
> not
> > effectively de-gas water, as
> > >>>> exposure to the atmosphere will allow
> > atmospheric gasses to continue
> > >>>> to dissolve into solution; it is the
> > atmospheric gasses that cause
> > >>>> water to be corrosive.? To de-gas
> water
> > you can:
> > >>>>
> > >>>> - Boil it
> > >>>> - Sonicate under vacuum
> > >>>> - Use a vacuum degasser
> > >>>> - Bubble He through it
> > >>>> - Etc.
> > >>>>
> > >>>> But unless you store your degassed
> water in
> > an
> > air-tight container
> > >>>> gasses will begin to dissolve back
> into
> > solution almost immediately.
> > >>>>
> > >>>> Michael in so. Cal.
> > >>>>
> > >>>> On Tue, Nov 20, 2012 at 1:47 PM, Pete
> Pete
> > <rsvp321 at hotmail.com>
> > wrote:
> > >>>>>
> > >>>>>
> > >>>>> I do!
> > >>>>>
> > >>>>> I fill all my old distilled four
> litre
> > jugs with tap water and let them
> > >>>>> sit with the caps off for about
> seven
> > days.
> > >>>>> A chemist buddy of mine said it
> takes
> > about 24 hours for any chlorine and
> > >>>>> other gasses to dissipate, but
> with the
> > narrow neck and relatively small cap
> > >>>>> opening, to be prudent, after a
> couple
> > of days I give it each jug a shake
> > >>>>> and leave it again for a few
> more.
> > >>>>>
> > >>>>> Cheers,
> > >>>>> Pete
> > >>>>>
> > >>>>>>
> > From: mikestang at gmail.com
> > >>>>>> Date: Tue, 20 Nov 2012
> 11:17:37
> > -0800
> > >>>>>> To: raremeteorites at yahoo.com
> > >>>>>> CC: meteorite-list at meteoritecentral.com
> > >>>>>> Subject: Re: [meteorite-list]
> Water
> > cutting question
> > >>>>>>
> > >>>>>> Adam, Mike, Carl, and list:
> > >>>>>>
> > >>>>>>
> > >>>>>> The main constituents in
> "pure"
> > water that cause corrosion are
> > >>>>>> dissolved gasses. Does anyone
> > de-gas their cutting water?
> > >>>>>>
> > >>>>>> Michael in so. Cal.
> > >>>>>>
> > >>>>>> On Tue, Nov 20, 2012 at 10:43
> AM,
> > Adam Hupe <raremeteorites at yahoo.com>
> > >>>>>> wrote:
> > >>>>>> >
> > >>>>>> >
> > >>>>>> > Who knows what chemicals
> lurk
> > in tap water? By purifying it, you are >
> > >>>>>> > removing the unknowns. I
> have
> > >>>>>> > seen, for lack of a
> better
> > term, Lawrencite disease creep up, >
> > >>>>>> > especially with tap water
> that
> > contains chlorine which seems to > accelerate
> > >>>>>> > the
> > >>>>>> > problem. I have had no
> issues
> > cutting with purified water as long as
> > >>>>>> > the contact time has
> been
> > minimized. I guess purifying it could make
> > >>>>>> > the water more acidic but
> I
> > also monitor the PH level and have not >
> > >>>>>> > seen
> > >>>>>> > much of a difference.
> > >>>>>>
> > >
> > >>>>>> > Other alternative
> coolants
> > such as mineral oil, pure ethyl alcohol or
> > >>>>>> > kerosine do not appeal to
> me
> > anymore, mainly due to fumes, ignition or
> > >>>>>> > the smell left in the
> > specimens.
> > >>>>>> >
> > >>>>>> >
> > >>>>>> > Adam
> > >>>>>> >
> > >>>>>> >
> > >>>>>> >
> > >>>>>> >
> > >>>>>> >
> > ________________________________
> > >>>>>> > From: Carl Agee <agee at unm.edu>
> > >>>>>> > To: meteoritelist
> > meteoritelist <meteorite-list at meteoritecentral.com>
> > >>>>>> > Sent: Tuesday, November
> 20,
> > 2012 9:35 AM
> > >>>>>> > Subject:
> [meteorite-list]
> > Water cutting
> > question
> > >>>>>> >
> > >>>>>> > I have been following
> the
> > thread on cutting irons in water. My
> > >>>>>> > question is, why
> distilled or
> > purified water rather than tap water? I
> > >>>>>> > was under the impression
> that
> > purified water, i.e. ultrapure water, is
> > >>>>>> > much more corrosive than
> > mineralized water like spring water or tap
> > >>>>>> > water. In fact,
> ultrapure
> > water is so corrosive it is often used in
> > >>>>>> > clean labs as a cleaning
> > medium for surfaces. Also, the pharmaceutical
> > >>>>>> > industry no longer uses
> > stainless steel tubing for ultrapure water
> > >>>>>> > because of corrosion --
> they
> > use Teflon or polyethylene instead I
> > >>>>>> > believe. Wouldn't pure
> water
> > be worse on iron oxidation than
> > >>>>>> > "mineral" water? I can
> > understand using pure water to cut down
> > on
> > >>>>>> > trace element
> contamination
> > for geochemical srtudies, especially on
> > >>>>>> > stones, but I don't see
> how
> > this helps for keeping irons from rusting.
> > >>>>>> > Also, while we are at it,
> what
> > is the best blade for cutting irons?
> > >>>>>> >
> > >>>>>> > Thanks,
> > >>>>>> >
> > >>>>>> > Carl Agee
> > >>>>>> > --
> > >>>>>> > Carl B. Agee
> > >>>>>> > Director and Curator,
> > Institute of Meteoritics
> > >>>>>> > Professor, Earth and
> Planetary
> > Sciences
> > >>>>>> > MSC03 2050
> > >>>>>> > University of New Mexico
> > >>>>>> > Albuquerque NM
> 87131-1126
> > >>>>>> >
> > >>>>>> > Tel: (505) 750-7172
> > >>>>>> > Fax: (505) 277-3577
> > >>>>>> > Email: agee at unm.edu
> > >>>>>> > http://meteorite.unm.edu/people/carl_agee/
> > >>>>>> >
> > ______________________________________________
> > >>>>>> >
> > >>>>>> > Visit the Archives at http://www.meteorite-list-archives.com
> > >>>>>> > Meteorite-list mailing
> list
> > >>>>>> > Meteorite-list at meteoritecentral.com
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> > >>>>>> >
> > ______________________________________________
> > >>>>>> >
> > >>>>>> > Visit the
> > Archives at http://www.meteorite-list-archives.com
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> list
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> > >>>>>>
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> > >>
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> > >
> > >
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> >
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Received on Thu 22 Nov 2012 04:42:06 AM PST