Marc Hudson on thu 11 mar 04
Hi Jennifer,
Make sure the porcelain and glazes are suited to one another, ie, ask your
supplier. If the porcelain and glazes are suited to one another, try
thinning (or thickening) the glaze for application. Also, the glazes may not
be formulated to blend or flow into one another. When you are ready to begin
to look at the ingredients, proportions and unity formunae of glazes, look
very seriously at Ron Roy and John Hasselberth's book: Mastering ^6 Glazes.
It is one of the best on the market today. Also, look at John Hasselberth's
GlazeMaster software for ^6 glazes for PC and Mac. This software is a great
tool for learning how to look at glazes, their ingredients, proportions and
unity formunae.
Marc Hudson
Playing with Fire
Espanola, NM
---------- Original Message -----------
From: Jennifer Rehkopf
To: CLAYART@LSV.CERAMICS.ORG
Sent: Thu, 11 Mar 2004 15:58:31 -0800
Subject: Cone 6 glazes for electric kiln
> I just bought an electric kiln, and am having some troubles finding
> glazes that will work for me. I would eventually like to make my
> own, but right now need to use pre-made glazes. I purchased some
> Opulence glazes, but was very unhappy with the glaze tests. When
> painted on, I could see the brush strokes, and was very thin (even
> with a couple coats). When I dipped or poured in and out, you could
> still see exactly where the glaze was applied (drip marks, thin
> spots, etc.).
>
> Does anyone have suggestions? I am using a porcelain body, and am
> firing to cone 6. I am used to using gas and wood kilns, but can't
> right now. I miss the beautiful results!
>
> Thanks,
>
> Jennifer Rehkopf
> jlrehkopf@yahoo.com
>
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Search - Find what you’re looking for faster.
>
>
______________________________________________________________________________
> 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.
------- End of Original Message -------
Jennifer Rehkopf on thu 11 mar 04
I just bought an electric kiln, and am having some troubles finding glazes that will work for me. I would eventually like to make my own, but right now need to use pre-made glazes. I purchased some Opulence glazes, but was very unhappy with the glaze tests. When painted on, I could see the brush strokes, and was very thin (even with a couple coats). When I dipped or poured in and out, you could still see exactly where the glaze was applied (drip marks, thin spots, etc.).
Does anyone have suggestions? I am using a porcelain body, and am firing to cone 6. I am used to using gas and wood kilns, but can't right now. I miss the beautiful results!
Thanks,
Jennifer Rehkopf
jlrehkopf@yahoo.com
---------------------------------
Do you Yahoo!?
Yahoo! Search - Find what you’re looking for faster.
jennifer hoolihan on fri 12 mar 04
There are several clay suppliers that produce their own line of cone 6
glazes. Two that come to mind are Seattle Pottery Supply and Laguna, both
have good websites. I have used some of SPS's glazes that were premixed in
pints and brushed them on. I didn't have problems with brush marks, but I
hate brushing glazes. You really need to do three coats and it becomes
tedious. However, you can order dry glazes and mix them to your preferred
consistency. The one pound sizes are pretty cheap, so you could get quite a
few and dip test tiles.
Hope this helps!
Jennifer Hoolihan
>I just bought an electric kiln, and am having some troubles finding glazes
>that will work for me. I would eventually like to make my own, but right
>now need to use pre-made glazes. I purchased some Opulence glazes, but was
>very unhappy with the glaze tests. When painted on, I could see the brush
>strokes, and was very thin (even with a couple coats). When I dipped or
>poured in and out, you could still see exactly where the glaze was applied
>(drip marks, thin spots, etc.).
>
>Does anyone have suggestions? I am using a porcelain body, and am firing
>to cone 6. I am used to using gas and wood kilns, but can't right now. I
>miss the beautiful results!
>
>Thanks,
>
>Jennifer Rehkopf
>jlrehkopf@yahoo.com
>
>
>---------------------------------
>Do you Yahoo!?
>Yahoo! Search - Find what you’re looking for faster.
>
>______________________________________________________________________________
>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.
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Snail Scott on fri 12 mar 04
At 03:58 PM 3/11/04 -0800, you wrote:
>I purchased some Opulence glazes, but was very unhappy with the glaze
tests. When painted on, I could see the brush strokes, and was very thin
(even with a couple coats). When I dipped or poured in and out, you could
still see exactly where the glaze was applied (drip marks, thin spots,
etc.)...
Sounds like it's just too thin. Brush on more coats,
or let it thicken a bit before applying. And you
might consider adding a longer soak to your firings,
to give the glazes time to blend and even out.
-Snail
Susan Fox-Hirschmann on fri 12 mar 04
"Mastering ^6 Glazes" has some exceptional glazes that are also
food safe/durable. You can get that book on Hesselberth/s website
www.frogpondpottery.com
(at least I think that is the site)
best of luck!
Susan
Also Laguna/Westwood makes some real nice glazes you might get some sample
color sheets of...
Linda Pahl on fri 12 mar 04
Jennifer Rehkopf wrote:
> I just bought an electric kiln, and am having some troubles finding
> glazes that will work for
> me.
Dear Jennifer:
To begin, I'd recommend the books Mastering Cone 6 Glazes by John
Hesselberth and Roy as well as Glazes Cone 6 by Michael Bailey. These
will get you off to a great start.
My website shows images of how some of the glazes in the books look
when fired, as well as other cone 6 oxidation glazes I have had good
luck with (though I use a high iron clay body instead of the porcelain
that you use). The site also lists the recipes and some tips on how to
get the best results from the glazes.
http://home.earthlink.net/~jessieadair/tests/
Best of luck with your new kiln and happy testing!
Regards,
Linda Pahl, Kew Gardens, New York
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
email: TheClosetPotter@earthlink.net
website: http://home.earthlink.net/~jessieadair/tests/
///////////////////////////////////////////////////////////////////////
///////////
Jennifer Rehkopf on sat 13 mar 04
Thank you for the suggestions, others have also recommended these books - I think I will pick them up. Also, I appreciated seeing the test tile examples, there are some wonderful results! Thanks!
Jennifer
Linda Pahl wrote:
Jennifer Rehkopf wrote:
> I just bought an electric kiln, and am having some troubles finding
> glazes that will work for
> me.
Dear Jennifer:
To begin, I'd recommend the books Mastering Cone 6 Glazes by John
Hesselberth and Roy as well as Glazes Cone 6 by Michael Bailey. These
will get you off to a great start.
My website shows images of how some of the glazes in the books look
when fired, as well as other cone 6 oxidation glazes I have had good
luck with (though I use a high iron clay body instead of the porcelain
that you use). The site also lists the recipes and some tips on how to
get the best results from the glazes.
http://home.earthlink.net/~jessieadair/tests/
Best of luck with your new kiln and happy testing!
Regards,
Linda Pahl, Kew Gardens, New York
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
email: TheClosetPotter@earthlink.net
website: http://home.earthlink.net/~jessieadair/tests/
///////////////////////////////////////////////////////////////////////
///////////
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David Hewitt on sat 13 mar 04
Jennifer,
If you would like to try a recipe that I use regularly at cone 6 on
porcelain, you are welcome to the following. It is a clear shiny
transparent glaze that has a low coefficient of expansion and so does
not craze on my porcelain.
Recipe LEF4
Wollastonite 82
China clay 173
Dolomite 39
Potash Feldspar 39
Zinc Oxide 13
Lithium Carbonate 12
Quartz 257
Frit 2279 Low Exp. 385
(Potclays) ____
1000
K2O .045 Al2O3 .461 SiO2 5.15
Na2O .018 B2O3 .467 TiO2 .001
CaO .556 Fe2O3 .004
MgO .100
Li2O .141
ZnO .140
CoE 1.847 x 10-6/oC Linear English & Turner
I see that others have suggested that you read either John & Ron's
'Mastering Cone 6 Glazes' or Mike Bailey's 'Glazes Cone 6'
In my opinion these books are complementary rather than alternatives.
'Mastering Cone 6 Glazes' is aimed at producing reliable, stable/durable
cone 6 glazes. In my opinion, 'Glazes Cone 6' gives a broader
understanding of the make up of glazes and how to move from a good shiny
transparent glaze to such alternatives as alumina matts, high alkaline
earth matts high silica glazes, lustre glazes ,raw glazes etc. Also its
general principals are applicable to working at higher cones.
If you can afford both then get both, but if it is a choice of one or
the other then Mike Bailey's may be the better choice.
David
In message , Jennifer Rehkopf writes
>I just bought an electric kiln, and am having some troubles finding glazes that
>will work for me. I would eventually like to make my own, but right now need to
>use pre-made glazes. I purchased some Opulence glazes, but was very unhappy
>with the glaze tests. When painted on, I could see the brush strokes, and was
>very thin (even with a couple coats). When I dipped or poured in and out, you
>could still see exactly where the glaze was applied (drip marks, thin spots,
>etc.).
>
>Does anyone have suggestions? I am using a porcelain body, and am firing to
>cone 6. I am used to using gas and wood kilns, but can't right now. I miss the
>beautiful results!
>
>Thanks,
>
>Jennifer Rehkopf
>jlrehkopf@yahoo.com
>
>
>---------------------------------
>Do you Yahoo!?
>Yahoo! Search - Find what you’re looking for faster.
--
David Hewitt
David Hewitt Pottery
South Wales UK
Web:- http://www.dhpot.demon.co.uk
Gary Harvey on sat 13 mar 04
Just finished reading "Mastering Cone 6 glazes" they have a website at
http://www.masteringglazes.com/ Good source book on stoneware and
porcelain. Gary Harvey
----- Original Message -----
From: "Jennifer Rehkopf"
To:
Sent: Thursday, March 11, 2004 5:58 PM
Subject: Cone 6 glazes for electric kiln
> I just bought an electric kiln, and am having some troubles finding glazes
that will work for me. I would eventually like to make my own, but right
now need to use pre-made glazes. I purchased some Opulence glazes, but was
very unhappy with the glaze tests. When painted on, I could see the brush
strokes, and was very thin (even with a couple coats). When I dipped or
poured in and out, you could still see exactly where the glaze was applied
(drip marks, thin spots, etc.).
>
> Does anyone have suggestions? I am using a porcelain body, and am firing
to cone 6. I am used to using gas and wood kilns, but can't right now. I
miss the beautiful results!
>
> Thanks,
>
> Jennifer Rehkopf
> jlrehkopf@yahoo.com
>
>
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Search - Find what you're looking for faster.
>
>
____________________________________________________________________________
__
> 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.
Jennifer Rehkopf on sun 14 mar 04
Hi, David. Thanks for the suggestion, I need a good base to start with, I appreciate the advice on the books also. Take care!
Jennifer
David Hewitt wrote:
Jennifer,
If you would like to try a recipe that I use regularly at cone 6 on
porcelain, you are welcome to the following. It is a clear shiny
transparent glaze that has a low coefficient of expansion and so does
not craze on my porcelain.
Recipe LEF4
Wollastonite 82
China clay 173
Dolomite 39
Potash Feldspar 39
Zinc Oxide 13
Lithium Carbonate 12
Quartz 257
Frit 2279 Low Exp. 385
(Potclays) ____
1000
K2O .045 Al2O3 .461 SiO2 5.15
Na2O .018 B2O3 .467 TiO2 .001
CaO .556 Fe2O3 .004
MgO .100
Li2O .141
ZnO .140
CoE 1.847 x 10-6/oC Linear English & Turner
I see that others have suggested that you read either John & Ron's
'Mastering Cone 6 Glazes' or Mike Bailey's 'Glazes Cone 6'
In my opinion these books are complementary rather than alternatives.
'Mastering Cone 6 Glazes' is aimed at producing reliable, stable/durable
cone 6 glazes. In my opinion, 'Glazes Cone 6' gives a broader
understanding of the make up of glazes and how to move from a good shiny
transparent glaze to such alternatives as alumina matts, high alkaline
earth matts high silica glazes, lustre glazes ,raw glazes etc. Also its
general principals are applicable to working at higher cones.
If you can afford both then get both, but if it is a choice of one or
the other then Mike Bailey's may be the better choice.
David
In message , Jennifer Rehkopf writes
>I just bought an electric kiln, and am having some troubles finding glazes that
>will work for me. I would eventually like to make my own, but right now need to
>use pre-made glazes. I purchased some Opulence glazes, but was very unhappy
>with the glaze tests. When painted on, I could see the brush strokes, and was
>very thin (even with a couple coats). When I dipped or poured in and out, you
>could still see exactly where the glaze was applied (drip marks, thin spots,
>etc.).
>
>Does anyone have suggestions? I am using a porcelain body, and am firing to
>cone 6. I am used to using gas and wood kilns, but can't right now. I miss the
>beautiful results!
>
>Thanks,
>
>Jennifer Rehkopf
>jlrehkopf@yahoo.com
>
>
>---------------------------------
>Do you Yahoo!?
>Yahoo! Search - Find what you’re looking for faster.
--
David Hewitt
David Hewitt Pottery
South Wales UK
Web:- http://www.dhpot.demon.co.uk
______________________________________________________________________________
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/
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Susan Fox-Hirschmann on mon 15 mar 04
Guess Ron/John are outta town and we should await comment from them.
I have spoken with John on numerous occasions, via email, about this issue on
3 in particular....spearmint, raspberry & slate blue-green.....and he assured
me of their durability and non leaching nature.
So perhaps we should say "some" of the glazes in that book?
Susan, Susan Susan
as you call me!?
Annandale, VA
Hendrix, Taylor J. on mon 15 mar 04
Susan, Susan, Susan:
While the glazes in their book may or may not be food safe, Ron and John
make no claims to "food safe" because for them the term is too
ambiguous. They have termed their criteria "durable" or "stable". I
still catch myself saying 'food safe' when I really mean what John and
Ron mean: a non leaching glaze.
Taylor, in Waco
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Susan
Fox-Hirschmann
Sent: Friday, March 12, 2004 12:56 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Cone 6 glazes for electric kiln
"Mastering ^6 Glazes" has some exceptional glazes that are also
food safe/durable. =20
...
Gary Harvey on mon 15 mar 04
Yes but that isn't that better than "Glazes Cone 6 " who posted a
disclaimer in the back of his book that says that "It must not be assumed
that any of the glazes given in this book are safe to use." p. 124 Why do
you think I bought the book? To find safe glazes to use. DUH.
----- Original Message -----
From: "Hendrix, Taylor J."
To:
Sent: Monday, March 15, 2004 9:12 AM
Subject: Re: Cone 6 glazes for electric kiln
Susan, Susan, Susan:
While the glazes in their book may or may not be food safe, Ron and John
make no claims to "food safe" because for them the term is too
ambiguous. They have termed their criteria "durable" or "stable". I
still catch myself saying 'food safe' when I really mean what John and
Ron mean: a non leaching glaze.
Taylor, in Waco
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Susan
Fox-Hirschmann
Sent: Friday, March 12, 2004 12:56 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Cone 6 glazes for electric kiln
"Mastering ^6 Glazes" has some exceptional glazes that are also
food safe/durable.
..
____________________________________________________________________________
__
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.
Carol Tripp on tue 16 mar 04
Perhaps it would have been fairer to quote the entire disclaimer in Mike
Bailey's book:
"In order to demonstrate various principles about glaze chemistry some
extreme glazes have been discussed. This has involved overloading the glaze
with various minerals and colouring oxides. It must not be assumed that any
of the glazes given in this book are safe to use." page 124 Glazes Cone 6.
The point is, we each have to be responsible for determining if the glazes
we use on functional pots are safe. Ron and John's book is not a bible of
safe glazes. It is a starting point. Mike Bailey's book approaches glazes
from a different angle. Both books are educative and useful in their own
ways. I can read Mastering Cone 6 Glazes and then read Glazes Cone 6 and
then I can see what Mike means about "extreme glazes". Ah, the light goes
on.
Best regards,
Carol
Dubai, UAE
Gary Harvey wrote:
>Yes but that isn't that better than "Glazes Cone 6 " who posted a
>disclaimer in the back of his book that says that "It must not be assumed
>that any of the glazes given in this book are safe to use." p. 124 Why do
>you think I bought the book? To find safe glazes to use. DUH.
Taylor Hendrix wrote:
>While the glazes in their book may or may not be food safe, Ron and John
>make no claims to "food safe" because for them the term is too
>ambiguous. They have termed their criteria "durable" or "stable". I
>still catch myself saying 'food safe' when I really mean what John and
>Ron mean: a non leaching glaze.
>
>Taylor, in Waco
Susan F-H wrote:
>"Mastering ^6 Glazes" has some exceptional glazes that are also
>food safe/durable.
_________________________________________________________________
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Ababi Sharon on tue 16 mar 04
Mastering Cone Six is an excellent tool to learn how to control your
glazes. However it becomes to be the book of books. Unfortunately - it
seems that most glazes clayarters are dealing with are these few glazes.
The glazes in the book are beautiful and durable and sellable.
However more glazes are or can be as durable and stable.
Even if you are not slow cooling....
It annoyed me very much when a potter offered us to send to her page
glaze tests results the way she had written : "Mainly from this book" .
It is in a way like buying your closes only in one shop or eating only
in one restaurant.
Ron and John do know may gratitude to their work and to the " privet"
help I get from them when I need it.
I have the sad feeling and sorry to say it again and again. Instead of
telling us again and again about this or that glaze try yourself: The
authors are giving you tools. The software's writers are giving you
tools The Robin Hoopers are giving you tools if you hate software.
Dare
Make mistakes
Find new ways!
Ababi Sharon
...Strarted to learn pottery in 3/1996
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Gary Harvey
Sent: Tuesday, March 16, 2004 3:47 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Cone 6 glazes for electric kiln
Yes but that isn't that better than "Glazes Cone 6 " who posted a
disclaimer in the back of his book that says that "It must not be
assumed
that any of the glazes given in this book are safe to use." p. 124 Why
do
you think I bought the book? To find safe glazes to use. DUH.
----- Original Message -----
From: "Hendrix, Taylor J."
To:
Sent: Monday, March 15, 2004 9:12 AM
Subject: Re: Cone 6 glazes for electric kiln
Susan, Susan, Susan:
While the glazes in their book may or may not be food safe, Ron and John
make no claims to "food safe" because for them the term is too
ambiguous. They have termed their criteria "durable" or "stable". I
still catch myself saying 'food safe' when I really mean what John and
Ron mean: a non leaching glaze.
Taylor, in Waco
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Susan
Fox-Hirschmann
Sent: Friday, March 12, 2004 12:56 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Cone 6 glazes for electric kiln
"Mastering ^6 Glazes" has some exceptional glazes that are also
food safe/durable.
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