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glaze by volume., not weight.

updated sat 28 may 05

 

Lili Krakowski on thu 19 may 05


In the Summer 1999 issue of Pottery Making Illustrated (vol 2, #3) I had an
article on the subject.

There are a number of good reasons to measure out glaze, rather than weigh.

For one the humidity in the air will affect the weight of an ingredient.
Not in a major enormous falling-off-your-chair way but enough to nullify
precision with the scales.

Furthermore, as was discussed a whole lot recently (!!!) the raw materials
we use vary in themselves. So while you are there in your Little Scientist
Outfit weighing and weighing you are NOT weighing out the exact precise same
thing as last time.

In my experience most glazes do very well by the measuring method. There
are two basic ways of approaching this.

1 Get standard measuring cups and spoons and put whatever you have weighed
out in the appropriate container. You may end up with 1/4 c + 1t. or 1/4
c - a teaspoon. Never mind. Using a fresh amount and weighing again,
repeat process several times, to get it right. And YES I MEAN NEW CUPS &
SPOONS! NOT the kitchen ones!!! (Also see caution below)

2. Weigh out each ingredient and pour in into a translucent container such
as a clean yogurt or cottage cheese one. Hold container at eye level and
mark clearly on outside the level the ingredient reaches. Write the name of
the glaze and of the material on the container. " B34, whiting".

I have read and been told that a number of experienced old potters use the
measuring method. I know I do for workhorse glazes and slips.

Caution: You must keep in mind that some materials pack down. So do NOT
use the measuring cup or whatever as a scoop, but gently pour the material
into it WITH a real scoop.



Lili Krakowski

Be of good courage

Eleanora Eden on sun 22 may 05


Hi Lili and all,

I am so happy that you offered this, Lili. When I was in college I
carefully weighed cups and tblspoons of all the ingredients in the
glaze room. Of course that notebook is long gone.

The glaze that Pete Voulkos gave me that I used for so long at high
fire I had transposed into volume all that long ago. Recently I gave
that recipe to Dan Saultman when he was looking for cone 10 white and
felt so apologetic that it was (gasp) by volume.

I used to be so proud that I measured everything rather than
weighing it, but recently with all this glaze tech computer stuff and
grams of everything it seemed like some kind of heresy.

A kitchen potter at heart, but using that Ohaus scale like a champ.....

Eleanora


>In the Summer 1999 issue of Pottery Making Illustrated (vol 2, #3) I had an
>article on the subject.
>
>There are a number of good reasons to measure out glaze, rather than weigh.
>
>For one the humidity in the air will affect the weight of an ingredient.
>Not in a major enormous falling-off-your-chair way but enough to nullify
>precision with the scales.
>
>Furthermore, as was discussed a whole lot recently (!!!) the raw materials
>we use vary in themselves. So while you are there in your Little Scientist
>Outfit weighing and weighing you are NOT weighing out the exact precise same
>thing as last time.
>
>In my experience most glazes do very well by the measuring method. There
>are two basic ways of approaching this.
>
>1 Get standard measuring cups and spoons and put whatever you have weighed
>out in the appropriate container. You may end up with 1/4 c + 1t. or 1/4
>c - a teaspoon. Never mind. Using a fresh amount and weighing again,
>repeat process several times, to get it right. And YES I MEAN NEW CUPS &
>SPOONS! NOT the kitchen ones!!! (Also see caution below)
>
>2. Weigh out each ingredient and pour in into a translucent container such
>as a clean yogurt or cottage cheese one. Hold container at eye level and
>mark clearly on outside the level the ingredient reaches. Write the name of
>the glaze and of the material on the container. " B34, whiting".
>
>I have read and been told that a number of experienced old potters use the
>measuring method. I know I do for workhorse glazes and slips.
>
>Caution: You must keep in mind that some materials pack down. So do NOT
>use the measuring cup or whatever as a scoop, but gently pour the material
>into it WITH a real scoop.
>
>
>
>Lili Krakowski
>
>Be of good courage
>
>______________________________________________________________________________
>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.

Victoria Cherney on mon 23 may 05


Hi Lili and Eleanora,

Your posts gave me a mental boost. I am bewildered by glazing numbers,
but, as someone who has never mixed my own glazes, I now feel a bit of
hope that by measuring I might be able to tackle a recipe.

Lili, I've emailed Pottery Making Illustrated in an effort to acquire
a copy of the 1999 issue that contains your article. I'm awaiting a
response. I can't wait to read it. I appreciate your having responded
to my post. The information you provided is terrific.

I plan to fire to cone 10 oxidation. Should there be others out there
who mix by measuring who find themselves in a sharing mood, I'm in
search of glaze recipes any glaze recipes.

Timing can be strange and seem ill-fated. Among the fateful treasures
I found while making the rounds of garage sales this weekend was an
Ohaus 2 kg scale. It's in perfect condition, except for the balance
being slightly off. I hope that some internet searching will reveal how
to adjust it so that the needle sits at 0. I hope to put it to minimal
use.

Cheers,
Victoria

On May 22, 2005, at 9:00 PM, Eleanora Eden wrote:

> Hi Lili and all,
>
> I am so happy that you offered this, Lili. When I was in college I
> carefully weighed cups and tblspoons of all the ingredients in the
> glaze room. Of course that notebook is long gone.
>
> The glaze that Pete Voulkos gave me that I used for so long as high
> fire I had transposed into volume all that long ago. Recently I gave
> that recipe to Dan Saultman when he was looking for cone 10 white and
> felt so apologetic that it was (gasp) by volume.
>
> I used to be so proud that I measured everything rather than
> weighing it, but recently with all this glaze tech computer stuff and
> grams of everything it seemed like some kind of heresy.
>
> A kitchen potter at heart, but using that Ohaus scale like a champ.....
>
> Eleanora
>
>
>> In the Summer 1999 issue of Pottery Making Illustrated (vol 2, #3) I
>> had an
>> article on the subject.
>>
>> There are a number of good reasons to measure out glaze, rather than
>> weigh.
>>
>> For one the humidity in the air will affect the weight of an
>> ingredient.
>> Not in a major enormous falling-off-your-chair way but enough to
>> nullify
>> precision with the scales.
>>
>> Furthermore, as was discussed a whole lot recently (!!!) the raw
>> materials
>> we use vary in themselves. So while you are there in your Little
>> Scientist
>> Outfit weighing and weighing you are NOT weighing out the exact
>> precise same
>> thing as last time.
>>
>> In my experience most glazes do very well by the measuring method.
>> There
>> are two basic ways of approaching this.
>>
>> 1 Get standard measuring cups and spoons and put whatever you have
>> weighed
>> out in the appropriate container. You may end up with 1/4 c + 1t. or
>> 1/4
>> c - a teaspoon. Never mind. Using a fresh amount and weighing again,
>> repeat process several times, to get it right. And YES I MEAN NEW
>> CUPS &
>> SPOONS! NOT the kitchen ones!!! (Also see caution below)
>>
>> 2. Weigh out each ingredient and pour in into a translucent
>> container such
>> as a clean yogurt or cottage cheese one. Hold container at eye level
>> and
>> mark clearly on outside the level the ingredient reaches. Write the
>> name of
>> the glaze and of the material on the container. " B34, whiting".
>>
>> I have read and been told that a number of experienced old potters
>> use the
>> measuring method. I know I do for workhorse glazes and slips.
>>
>> Caution: You must keep in mind that some materials pack down. So do
>> NOT
>> use the measuring cup or whatever as a scoop, but gently pour the
>> material
>> into it WITH a real scoop.
>>
>>
>>
>> Lili Krakowski
>>
>> Be of good courage
>>
>> ______________________________________________________________________
>> ________
>> 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.
>
> _______________________________________________________________________
> _______
> 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.
>

Wayne Seidl on mon 23 may 05


Victoria:
Look at the scale. Underneath the "resting plate" where you place
the item to be weighed is usually a small, knurled knob. Turning it
will move the needle back toward or away from "0". You may have to
play with it a bit to get it exact. Be sure before doing so that
any item (such as the resting plate itself) is in place before
making your adjustment(s).
Hope that helps,
Wayne Seidl

snip
Among the fateful treasures
I found while making the rounds of garage sales this weekend was an
Ohaus 2 kg scale. It's in perfect condition, except for the balance
being slightly off. I hope that some internet searching will reveal
how
to adjust it so that the needle sits at 0. I hope to put it to
minimal
use.

Cheers,
Victoria

Eleanora Eden on thu 26 may 05


Hi again,

My Ohaus scale has a knob under the pan that adjusts the scale.

E

>Hi Lili and Eleanora,
>
>Your posts gave me a mental boost. I am bewildered by glazing numbers,
>but, as someone who has never mixed my own glazes, I now feel a bit of
>hope that by measuring I might be able to tackle a recipe.
>
>Lili, I've emailed Pottery Making Illustrated in an effort to acquire
>a copy of the 1999 issue that contains your article. I'm awaiting a
>response. I can't wait to read it. I appreciate your having responded
>to my post. The information you provided is terrific.
>
>I plan to fire to cone 10 oxidation. Should there be others out there
>who mix by measuring who find themselves in a sharing mood, I'm in
>search of glaze recipes any glaze recipes.
>
>Timing can be strange and seem ill-fated. Among the fateful treasures
>I found while making the rounds of garage sales this weekend was an
>Ohaus 2 kg scale. It's in perfect condition, except for the balance
>being slightly off. I hope that some internet searching will reveal how
>to adjust it so that the needle sits at 0. I hope to put it to minimal
>use.
>
>Cheers,
>Victoria
>
>On May 22, 2005, at 9:00 PM, Eleanora Eden wrote:
>
>>Hi Lili and all,
>>
>>I am so happy that you offered this, Lili. When I was in college I
>>carefully weighed cups and tblspoons of all the ingredients in the
>>glaze room. Of course that notebook is long gone.
>>
>>The glaze that Pete Voulkos gave me that I used for so long as high
>>fire I had transposed into volume all that long ago. Recently I gave
>>that recipe to Dan Saultman when he was looking for cone 10 white and
>>felt so apologetic that it was (gasp) by volume.
>>
>>I used to be so proud that I measured everything rather than
>>weighing it, but recently with all this glaze tech computer stuff and
>>grams of everything it seemed like some kind of heresy.
>>
>>A kitchen potter at heart, but using that Ohaus scale like a champ.....
>>
>>Eleanora
>>
>>>In the Summer 1999 issue of Pottery Making Illustrated (vol 2, #3) I
>>>had an
>>>article on the subject.
>>>
>>>There are a number of good reasons to measure out glaze, rather than
>>>weigh.
>>>
>>>For one the humidity in the air will affect the weight of an
>>>ingredient.
>>>Not in a major enormous falling-off-your-chair way but enough to
>>>nullify
>>>precision with the scales.
>>>
>>>Furthermore, as was discussed a whole lot recently (!!!) the raw
>>>materials
>>>we use vary in themselves. So while you are there in your Little
>>>Scientist
>>>Outfit weighing and weighing you are NOT weighing out the exact
>>>precise same
>>>thing as last time.
>>>
>>>In my experience most glazes do very well by the measuring method.
>>>There
>>>are two basic ways of approaching this.
>>>
>>>1 Get standard measuring cups and spoons and put whatever you have
>>>weighed
>>>out in the appropriate container. You may end up with 1/4 c + 1t. or
>>>1/4
>>>c - a teaspoon. Never mind. Using a fresh amount and weighing again,
>>>repeat process several times, to get it right. And YES I MEAN NEW
>>>CUPS &
>>>SPOONS! NOT the kitchen ones!!! (Also see caution below)
>>>
>>>2. Weigh out each ingredient and pour in into a translucent
>>>container such
>>>as a clean yogurt or cottage cheese one. Hold container at eye level
>>>and
>>>mark clearly on outside the level the ingredient reaches. Write the
>>>name of
>>>the glaze and of the material on the container. " B34, whiting".
>>>
>>>I have read and been told that a number of experienced old potters
>>>use the
>>>measuring method. I know I do for workhorse glazes and slips.
>>>
>>>Caution: You must keep in mind that some materials pack down. So do
>>>NOT
>>>use the measuring cup or whatever as a scoop, but gently pour the
>>>material
>>>into it WITH a real scoop.
>>>
>>>
>>>
>>>Lili Krakowski
>>>
>>>Be of good courage
>>>
>>>______________________________________________________________________
>>>________
>>>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.
>>
>>_______________________________________________________________________
>>_______
>>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.
>>
>
>______________________________________________________________________________
>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.