WJ Seidl on wed 17 jan 07
Dannon:
Calcium does indeed stick to stainless, but at a much slower rate.
I have always assumed that the surface of enameled porcelain is more porous
than stainless, especially highly polished (mirror) stainless.
Just an opinion, of course. I have no proof one way or t'other.
Best,
Wayne Seidl
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Dannon Rhudy
Sent: Wednesday, January 17, 2007 9:55 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Spring workshops: "Glazes Demystified " /calcium question
These sound good, Steph. They all do, in fact. And Dave's lectures are
great; I heard one in South Carolina.
It was actually fun. And funny.
However, I have a slightly off-topic question for Dave Finkelnburg, and/or
anyone else who knows. Or merely wants to posit a theory.
About two months or so ago I replaced an enamel-ware
tea kettle with a stainless steel one. There is a lot of
calcium in the water here, and it makes hard deposits on
the tea kettle interior. Or, it did on the enamel/porcelain
one. I had to clean it with vinegar a couple times a week, and it took a
while to dissolve. Now, with the stainless
tea kettle, the calcium does not stick. It's there, in the
water in the kettle, but does not stick to the walls. It
rinses out without trouble.
Why would the calcium accumulate on the walls of the
enamel/porcelain tea kettle, and not accumulate on the
stainless one? I find this very curious.
regards
Dannon Rhudy
Dannon Rhudy on wed 17 jan 07
These sound good, Steph. They all do, in fact. And Dave's lectures are
great; I heard one in South Carolina.
It was actually fun. And funny.
However, I have a slightly off-topic question for Dave Finkelnburg, and/or
anyone else who knows. Or merely wants to posit a theory.
About two months or so ago I replaced an enamel-ware
tea kettle with a stainless steel one. There is a lot of
calcium in the water here, and it makes hard deposits on
the tea kettle interior. Or, it did on the enamel/porcelain
one. I had to clean it with vinegar a couple times a week, and it took a
while to dissolve. Now, with the stainless
tea kettle, the calcium does not stick. It's there, in the
water in the kettle, but does not stick to the walls. It
rinses out without trouble.
Why would the calcium accumulate on the walls of the
enamel/porcelain tea kettle, and not accumulate on the
stainless one? I find this very curious.
regards
Dannon Rhudy
cliff daniels on wed 17 jan 07
Hi,
I don't have an answer, but I have a stainless
steel kettle. For the holidays my wife gave me a
little mesh metal ball that just sits in the
kettle and collects calcium in its holes. It
works. I assumed it was some kind of ionization
thing. Dont know what it is made of and I threw
away the packaging.
Could ionization, or lack, also be the issue with
the enamel pot? No free metals out there looking
for mates?
--- Dannon Rhudy wrote:
> These sound good, Steph. They all do, in fact.
> And Dave's lectures are
> great; I heard one in South Carolina.
> It was actually fun. And funny.
>
> However, I have a slightly off-topic question
> for Dave Finkelnburg, and/or
> anyone else who knows. Or merely wants to
> posit a theory.
>
> About two months or so ago I replaced an
> enamel-ware
> tea kettle with a stainless steel one. There
> is a lot of
> calcium in the water here, and it makes hard
> deposits on
> the tea kettle interior. Or, it did on the
> enamel/porcelain
> one. I had to clean it with vinegar a couple
> times a week, and it took a
> while to dissolve. Now, with the stainless
> tea kettle, the calcium does not stick. It's
> there, in the
> water in the kettle, but does not stick to the
> walls. It
> rinses out without trouble.
>
> Why would the calcium accumulate on the walls
> of the
> enamel/porcelain tea kettle, and not accumulate
> on the
> stainless one? I find this very curious.
>
> regards
>
> Dannon Rhudy
>
>
______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or
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> be reached at melpots@pclink.com.
>
The Mud Man
Clifford Daniels
1 Calvin Coombs Rd.
Colrain, MA 01340
413-624-0251
mudmanpottery@yahoo.com
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stephani stephenson on wed 17 jan 07
Dannon
that's a good question
I don't know the answer
the only observation i have made is that the
calcium,etc. salts don't seem to stick on a new
enamelled kettle . the surface is nice and impervious
. Though i usually rinse a kettle after each use I
notice, with a new kettle salts from boiled off water
will simply float around if the kettle til rinsed.
i can usually extend the life of a kettle for a few
years but it seems that eventually salts will adhere.
i wonder if it has to do with repeated heating, and
whether that causes the enamelled surface to become
more porous or even rough as the enamel separates into
platelets...maybe like a crazed glaze, even on a micro
level...
the result being that it goes from a no-stick surface
to a 'velcro for calcium' surface.
i have seen enamel deteriorate on a visible scale ,but
perhaps this occurs ...
lime scale certainly seems to prefer some surfaces
over others though all metals are not exempt!
on a smaller scale. then too, you wonder about any
chemical /molecular/electrical causes
hmmm.is this related to plaque and teeth? OK one
phenomena at a time!
best wishes
Stephani
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Cheryl Litman on sat 20 jan 07
Hi,
It sounds interesting, I wonder what the ball is made of, but it does sound
like something that would bind the minerals in the water. I wonder how long
the ball will last? Hmm. My mother-in-law has the same problem and goes
through a lot of teapots. I'll have to look for one in the stores.
It's amazing what new things come out. Years ago I bought a salt shaker
that has a bit of bisqued clay in the cap - keeps it from getting clumpy in
the humidity since the porous clay absorbs the moisure getting into the
shaker. I don't know if it would work well in a really humid climate but
it's fine here in NJ.
Cheryl
On 1/17/07, cliff daniels wrote:
>
> Hi,
> I don't have an answer, but I have a stainless
> steel kettle. For the holidays my wife gave me a
> little mesh metal ball that just sits in the
> kettle and collects calcium in its holes. It
> works. I assumed it was some kind of ionization
> thing. Dont know what it is made of and I threw
> away the packaging.
>
> Could ionization, or lack, also be the issue with
> the enamel pot? No free metals out there looking
> for mates?
>
>
>
> --- Dannon Rhudy wrote:
>
> > These sound good, Steph. They all do, in fact.
> > And Dave's lectures are
> > great; I heard one in South Carolina.
> > It was actually fun. And funny.
> >
> > However, I have a slightly off-topic question
> > for Dave Finkelnburg, and/or
> > anyone else who knows. Or merely wants to
> > posit a theory.
> >
> > About two months or so ago I replaced an
> > enamel-ware
> > tea kettle with a stainless steel one. There
> > is a lot of
> > calcium in the water here, and it makes hard
> > deposits on
> > the tea kettle interior. Or, it did on the
> > enamel/porcelain
> > one. I had to clean it with vinegar a couple
> > times a week, and it took a
> > while to dissolve. Now, with the stainless
> > tea kettle, the calcium does not stick. It's
> > there, in the
> > water in the kettle, but does not stick to the
> > walls. It
> > rinses out without trouble.
> >
> > Why would the calcium accumulate on the walls
> > of the
> > enamel/porcelain tea kettle, and not accumulate
> > on the
> > stainless one? I find this very curious.
> >
> > regards
> >
> > Dannon Rhudy
> >
> >
>
> ______________________________________________________________________________
> > Send postings to clayart@lsv.ceramics.org
> >
> > You may look at the archives for the list or
> > change your subscription
> > settings from http://www.ceramics.org/clayart/
> >
> > Moderator of the list is Mel Jacobson who may
> > be reached at melpots@pclink.com.
> >
>
>
> The Mud Man
> Clifford Daniels
> 1 Calvin Coombs Rd.
> Colrain, MA 01340
> 413-624-0251
> mudmanpottery@yahoo.com
>
>
>
>
> ____________________________________________________________________________________
> Do you Yahoo!?
> Everyone is raving about the all-new Yahoo! Mail beta.
> http://new.mail.yahoo.com
>
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
--
Cheryl Litman
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