David Hendley on sun 22 sep 02
Chris, this recipe looked unusual to me, so I ran it through
a calculation program.
I contains, for all practical purposes, no alumina. I wonder
how it stays on a pot without running onto the kiln shelf.
Also, since it includes no clay, I wonder how the raw glaze
sticks on the pot enough to get it loaded and fired.
It is also silica deficient for a cone 10 glaze, even for a cone 6 glaze.
And yet, it works for you? Is there a typo?
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com
----- Original Message -----
> Snowden's White Cone 9/10 in reduction little black speckles will develop.
> Gerstley Borate 2,000
> Dolomite 1,000
> Talc 3,000
> Custer 10,000
> Flint 3,000
>
> Yum yum! You have got to admit a winner when you see a liner glaze like
> this. Semi matt with an ability to blush out any over spraying.
mel jacobson on sun 22 sep 02
it is not the white that should be considered.
it should be....what surface are you going to use?
my favorite when it is perfect is:
a soft white, almost semi-matt, but on the
shine side. so, south, by south west.
it makes for a great feel on the mouth.
like velvet.
here is the nigel wood song glaze...repro:
pounds only, cone 10
talc 0.7
wollastonite 6
custer spar 5.5
epk 2.8
ball clay 2.8
flint 4.4
i use a grocery scale.
makes a five gallon pail full.
this is a semi opaque glaze.
luscious to touch, almost butter with temp outside
about 72F.
it takes color very well. for pure white
i use it on porcelain. it will show an aqua cast
if thick. (celedon quality.)
as with many of nigel woods glazes, wollastonite is the
key. he thinks that the chinese sung potters had
wollastonite naturally occurring in their feldspar and other
materials, or, at least something like it chemically.
he has found that this addition makes the glaze very
close to old chinese surfaces. i have no reason to dispute that,
and it sure is a nice glaze surface.
i just made a set of dishes for our kitchen. dirty porcelain* with
lake superior iron chunks spitting out, clear sung glaze with a
spot of cranberry red in the center of each plate. they look nice.
some of the mugs have cranberry on the outside.
mr. uchida hated dark colors on the interior of cups and mugs.
he said....white, white, you cannot see the coffee or tea against
black or dark. damiiii.
* dirty porcelain:
bunch of old porcelain
add:
20 percent stoneware clay
lake superior iron sand
fine grog and sand.
mix well.
age.
make into pots/
fire to cone 11. pete's red
sung white, etc.
fires a white to gray. gray better.
depends on how much iron was in the stoneware clay.
mine has a great deal.
From:
Minnetonka, Minnesota, U.S.A.
web site: my.pclink.com/~melpots
or try: http://www.pclink.com/melpots
Chris Stanley on sun 22 sep 02
Snowden's White Cone 9/10 in reduction little black speckles will develop.
Gerstley Borate 2,000
Dolomite 1,000
Talc 3,000
Custer 10,000
Flint 3,000
Yum yum! You have got to admit a winner when you see a liner glaze like
this. Semi matt with an ability to blush out any over spraying.
claybair on sun 22 sep 02
How about a ^6 ox
"a soft white, almost semi-matt, but on the
shine side. so, south, by south west. it makes for a great feel on the
mouth.
like velvet."
Anyone gotta recipe???
Gayle Bair
Bainbridge Island, WA
http://claybair.com
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of mel jacobson
Sent: Sunday, September 22, 2002 7:33 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: white
it is not the white that should be considered.
it should be....what surface are you going to use?
my favorite when it is perfect is:
a soft white, almost semi-matt, but on the
shine side. so, south, by south west.
it makes for a great feel on the mouth.
like velvet.
here is the nigel wood song glaze...repro:
pounds only, cone 10
talc 0.7
wollastonite 6
custer spar 5.5
epk 2.8
ball clay 2.8
flint 4.4
i use a grocery scale.
makes a five gallon pail full.
this is a semi opaque glaze.
luscious to touch, almost butter with temp outside
about 72F.
it takes color very well. for pure white
i use it on porcelain. it will show an aqua cast
if thick. (celedon quality.)
as with many of nigel woods glazes, wollastonite is the
key. he thinks that the chinese sung potters had
wollastonite naturally occurring in their feldspar and other
materials, or, at least something like it chemically.
he has found that this addition makes the glaze very
close to old chinese surfaces. i have no reason to dispute that,
and it sure is a nice glaze surface.
i just made a set of dishes for our kitchen. dirty porcelain* with
lake superior iron chunks spitting out, clear sung glaze with a
spot of cranberry red in the center of each plate. they look nice.
some of the mugs have cranberry on the outside.
mr. uchida hated dark colors on the interior of cups and mugs.
he said....white, white, you cannot see the coffee or tea against
black or dark. damiiii.
* dirty porcelain:
bunch of old porcelain
add:
20 percent stoneware clay
lake superior iron sand
fine grog and sand.
mix well.
age.
make into pots/
fire to cone 11. pete's red
sung white, etc.
fires a white to gray. gray better.
depends on how much iron was in the stoneware clay.
mine has a great deal.
From:
Minnetonka, Minnesota, U.S.A.
web site: my.pclink.com/~melpots
or try: http://www.pclink.com/melpots
____________________________________________________________________________
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Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Chris Stanley on mon 23 sep 02
I will have to check the original, which is locked up with all of the blue
glaze recipes.
I am pretty sure you are looking at the real glaze.
While you are at it, look at this one:
Spotted White 9 10 reduction
Feldspar 40%
Whiting 10%
Dolomite 10%
Talc 10%
E.P.K. 20%
Flint 10%
This one does have some alumina in it!
As to the not sticking on the pot from the Snowden's White would the talc
and the Gerstley B not help with that?
-----Original Message-----
From: David Hendley [mailto:hendley@tyler.net]
Sent: Sunday, September 22, 2002 11:25 PM
To: stanley_c@utpb.edu
Cc: Ceramic Arts Discussion List
Subject: Re: white
Chris, this recipe looked unusual to me, so I ran it through
a calculation program.
I contains, for all practical purposes, no alumina. I wonder
how it stays on a pot without running onto the kiln shelf.
Also, since it includes no clay, I wonder how the raw glaze
sticks on the pot enough to get it loaded and fired.
It is also silica deficient for a cone 10 glaze, even for a cone 6 glaze.
And yet, it works for you? Is there a typo?
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com
----- Original Message -----
> Snowden's White Cone 9/10 in reduction little black speckles will develop.
> Gerstley Borate 2,000
> Dolomite 1,000
> Talc 3,000
> Custer 10,000
> Flint 3,000
>
> Yum yum! You have got to admit a winner when you see a liner glaze like
> this. Semi matt with an ability to blush out any over spraying.
Ron Roy on thu 26 sep 02
Must be something wrong here - if all that Custer is calculated in I get
0.27 alumina and 3.05 silica - that is enough silica in a cone 6 glaze to
make it stable and enough alumina to keep the glaze on the pot.
I'm guessing the Custer was calculated at 1000 instead of 10,000.
The GB is 10.5% so I am guessing it has some suspension if not too thin.
RR
>I contains, for all practical purposes, no alumina. I wonder
>how it stays on a pot without running onto the kiln shelf.
>Also, since it includes no clay, I wonder how the raw glaze
>sticks on the pot enough to get it loaded and fired.
>It is also silica deficient for a cone 10 glaze, even for a cone 6 glaze.
>
>----- Original Message -----
>> Snowden's White Cone 9/10 in reduction little black speckles will develop.
>> Gerstley Borate 2,000
>> Dolomite 1,000
>> Talc 3,000
>> Custer 10,000
>> Flint 3,000
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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