Jeff Jeff on wed 22 sep 10
Does anyone know why, from a chemical standpoint, it aids in thinning
porcelain casting slip to use distilled water? Years ago, a porcelain doll
artist, for whom I had made some molds, told me that she always thins her =
slip
with distilled water.
I don't know why but it does seem to reduce the need to add deflocculant
to thickened slip.
thanks
Jeff Longtin
Minneapolis
Fabienne McMillan on thu 23 sep 10
Wouldn't that mean her or any tap or well water has so many mineral
which may include flocculants? Distilled water is essentially
deprived of mineral afaik thus giving lessening the guessing game
since it's always the same. I use distilled water in my glazes all
the time to avoid adding unwanted mineral; I did this when I was in
the city with tap water and now on well water which is even worse.
Fabienne
"We never touch people so lightly that we do not leave a trace." ~
Peggy Tabor Millin
On Sep 22, 2010, at 10:25 PM, Jeff Jeff wrote:
> Does anyone know why, from a chemical standpoint, it aids in thinning
> porcelain casting slip to use distilled water? Years ago, a
> porcelain doll
> artist, for whom I had made some molds, told me that she always
> thins her slip
> with distilled water.
> I don't know why but it does seem to reduce the need to add
> deflocculant
> to thickened slip.
> thanks
> Jeff Longtin
> Minneapolis
Ron Roy on thu 23 sep 10
Hi jeff,
Many find that using a relatively pure form of water cures some glaze
problems - I'm sure that using the same purity of water each time cuts
down on problems with slips - simply because there is so little
contamination coming in with the distilled - demineralized and
deionized water would both be even more pure I think.
RR
Quoting Jeff Jeff :
> Does anyone know why, from a chemical standpoint, it aids in thinning
> porcelain casting slip to use distilled water? Years ago, a porcelain dol=
l
> artist, for whom I had made some molds, told me that she always
> thins her slip
> with distilled water.
> I don't know why but it does seem to reduce the need to add deflocculant
> to thickened slip.
> thanks
> Jeff Longtin
> Minneapolis
>
John Rodgers on thu 23 sep 10
I too use distilled water in my glazes, and also my slip. Any step
that can be used to reduce variables in clay art is a good thing. It
gives better control.
BTW, it takes a lot of water for what I do. I found that by capturing
all the condensate water from my air conditioner helped recuce my costs.
It is after all, essentially distilled water, and here in the south in
summer with the high humidity, I get lots of condensate. I have a cat,
and consequently have many, many left over large-mouth one gallon dry
cat food containers that I use to store my condensate water in.
Condensate water has some impurities like dust, bacteria, whatever, but
no minerals. I just pass the water through a paper coffee filter to
remove the dust, and since I'm not drinking the stuff, I don't worry
about a few bacteria. They burn out when the slip/glace is fired. It
really works well.
I also keep the condensate water from my household and shop
dehumidifiers. In summer, my dehumidifiers will produce 6 to 8 gallons
of condensate(distilled) water per day. I benefit in two ways - my work
environment is more comfortable with the lower humidity, and I have
distilled water for FREE!
John
John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com
On 9/23/2010 10:52 AM, Fabienne McMillan wrote:
> Wouldn't that mean her or any tap or well water has so many mineral
> which may include flocculants? Distilled water is essentially
> deprived of mineral afaik thus giving lessening the guessing game
> since it's always the same. I use distilled water in my glazes all
> the time to avoid adding unwanted mineral; I did this when I was in
> the city with tap water and now on well water which is even worse.
>
> Fabienne
>
> "We never touch people so lightly that we do not leave a trace." ~
> Peggy Tabor Millin
>
> On Sep 22, 2010, at 10:25 PM, Jeff Jeff wrote:
>
>> Does anyone know why, from a chemical standpoint, it aids in thinning
>> porcelain casting slip to use distilled water? Years ago, a
>> porcelain doll
>> artist, for whom I had made some molds, told me that she always
>> thins her slip
>> with distilled water.
>> I don't know why but it does seem to reduce the need to add
>> deflocculant
>> to thickened slip.
>> thanks
>> Jeff Longtin
>> Minneapolis
>
>
Philip Poburka on tue 28 sep 10
Hi John,
Well, true Distilled or Evaporate Water is Hypotonic, and ( having no
Mineral content, would tend to enter through the Cell Walls and over-inflat=
e
or rupture or explode or ) would tend to harm or kill any Micro-Organisms
which get into it.
If enough dust or fine Aeolean organics and so on get into the erstwhile
distilled
or evaporate Water, the Water could become Isotonic, and host Bacteria and
other micro-Organisms then.
One must avoid Distilled Water if wishing to correct dehydration of an
Organism, for
example.
Good for replenishing Wet Cell Batteries, of course...but, not good for
rehydration replenishment for Organisms...nor for growing or hosting
Animaculae.
Phil
Lv
----- Original Message -----
From: "John Rodgers"
> I too use distilled water in my glazes, and also my slip. Any step
> that can be used to reduce variables in clay art is a good thing. It
> gives better control.
>
> BTW, it takes a lot of water for what I do. I found that by capturing
> all the condensate water from my air conditioner helped recuce my costs.
> It is after all, essentially distilled water, and here in the south in
> summer with the high humidity, I get lots of condensate. I have a cat,
> and consequently have many, many left over large-mouth one gallon dry
> cat food containers that I use to store my condensate water in.
> Condensate water has some impurities like dust, bacteria, whatever, but
> no minerals. I just pass the water through a paper coffee filter to
> remove the dust, and since I'm not drinking the stuff, I don't worry
> about a few bacteria. They burn out when the slip/glace is fired. It
> really works well.
>
> I also keep the condensate water from my household and shop
> dehumidifiers. In summer, my dehumidifiers will produce 6 to 8 gallons
> of condensate(distilled) water per day. I benefit in two ways - my work
> environment is more comfortable with the lower humidity, and I have
> distilled water for FREE!
>
> John
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