beardiherd on mon 20 dec 99
Hello, I have a question, I'm a relative newby, been doing pottery for about
3 and a half years. I've only worked with low fire clays. I wanted to try
some funcional ware so i ordered clay from Amaco (brickyard) in
Indianapolis which is cone 6. I called the company and asked them, just to
make sure that I was right, if I should bisque fire it to the same temp as
my low fire clay. The woman told me, fire it to cone 5. I didn't think
that is right, and I questioned her some more, but she said that it was high
fire clay and it should be bisqued at cone 5. Now, I don't think this is
right. I have a load ready for the kiln, but I am not quite confident
enough to follow my own instincts. Can the list help me? Thanks, Sherry
Morrow
madwa on tue 21 dec 99
Hi there!
Don't bisque at cone 5!!!! Follow your instincts, girl and do just as you
would for your low fire bisques. Any pot bisqued at cone 5 will be too
vitrified to glaze for a start, and more importantly, your pots would most
likely either blow up or crack because they wouldn't have had the advantage
of most of the moisture driven off them from their bisque firing. Have lots
and lots of fun....
Yours in Clay
Sharry Madden
>From Sweet New Zealand
elizabeth priddy on tue 21 dec 99
I think I know what might be going on.
if you still want to use your low fire glazes on
the high fire clay, you can "bisque" it to 5 and
then fire your glaze firing to the appropriate
temp for glazes. it is harder to fit and will
not stick as well when you are glazing, but I am
told it works.
Technically, you should bisque your clay to
about ^05, same as your glaze temp, and then
fire the work with cone 5 glazes to cone 5.
i hope this makes sense. I don't recommend it,
but i have heard it works. i doubt that the
low glazes fit the high fire clay properly, but
there are some visual effects that the folks I
talked to wanted to still get for decorative
effects.
---
Elizabeth Priddy
email: epriddy@usa.net
http://www.angelfire.com/nc/clayworkshop
Clay: 12,000 yrs and still fresh!
On Mon, 20 Dec 1999 16:02:24 beardiherd wrote:
>----------------------------Original message----------------------------
>
>
>Hello, I have a question, I'm a relative newby, been doing pottery for about
>3 and a half years. I've only worked with low fire clays. I wanted to try
>some funcional ware so i ordered clay from Amaco (brickyard) in
>Indianapolis which is cone 6. I called the company and asked them, just to
>make sure that I was right, if I should bisque fire it to the same temp as
>my low fire clay. The woman told me, fire it to cone 5. I didn't think
>that is right, and I questioned her some more, but she said that it was high
>fire clay and it should be bisqued at cone 5. Now, I don't think this is
>right. I have a load ready for the kiln, but I am not quite confident
>enough to follow my own instincts. Can the list help me? Thanks, Sherry
>Morrow
>
--== Sent via Deja.com http://www.deja.com/ ==--
Share what you know. Learn what you don't.
Nina Jones on tue 21 dec 99
------------------
Hi, Sherry. Different people tend to bisque to different temps, but the =
range
I've seen is between =5E08 and =5E04. I bisque =5Feverything=5F to =5E04, =
including my
=5E10 porcelain (and I was told by another potter who bisques to =5E06 that =
that was
too high=21). Perhaps the representative you spoke to didn't understand =
what you
meant.
I bisque my greenware to prepare it for glazing. If you bisque to =5E5, =
your clay
body will be partially vitrified and won't accept the glaze you try to put =
on
it, unless you specially treat it with some type of fixative. You need the =
pot
to still be porous so that the glaze will stick to the pot and properly =
interact
with the claybody during firing.
Maybe the Amaco representative was giving you the clay maturity temperature.=
If
i'ts a =5E5-=5E6 clay, you do need to glaze fire to =5E5 or =5E6 in order to=
have a
properly mature pot.
I hope this helps.
Nina D. Jones
=40 njones=40winston.com
Southside Chicago
Karin Abromaitis on tue 21 dec 99
Your gut instinct is right. A cone 6 stoneware clay should be bisque fired
much lower. Depending on how you want the bisqued pots to absorb glaze,
bisque temperatures can vary from 08 to 04. Personally, I bisque my ware at
05. Ask around, try a couple of different temps and see what works best for
you.
Karin A.
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.UKY.EDU]On Behalf
Of beardiherd
Sent: Monday, December 20, 1999 4:02 PM
To: CLAYART@LSV.UKY.EDU
Subject: stoneware bisque
----------------------------Original message----------------------------
Hello, I have a question, I'm a relative newby, been doing pottery for about
3 and a half years. I've only worked with low fire clays. I wanted to try
some funcional ware so i ordered clay from Amaco (brickyard) in
Indianapolis which is cone 6. I called the company and asked them, just to
make sure that I was right, if I should bisque fire it to the same temp as
my low fire clay. The woman told me, fire it to cone 5. I didn't think
that is right, and I questioned her some more, but she said that it was high
fire clay and it should be bisqued at cone 5. Now, I don't think this is
right. I have a load ready for the kiln, but I am not quite confident
enough to follow my own instincts. Can the list help me? Thanks, Sherry
Morrow
Dale A. Neese on tue 21 dec 99
I wouldn't bisque to cone 5 . Usually I have bisque fired in the range from
08 to 04 for stoneware clays. I now observe that I am getting a better glaze
application and glaze firing results at 08 than 04 even though the bisque
maybe a little more fragile to handle. I glaze fire to 10-11.
Dale Tex
chappelear on wed 22 dec 99
Perhaps she meant c/05. Cone 5 would make your wares not porous enough to
easily accept glaze. Many potters bisque somewhere between c/08 - c/04.
-----Original Message-----
From: beardiherd
To: CLAYART@LSV.UKY.EDU
Date: Monday, December 20, 1999 4:03 PM
Subject: stoneware bisque
>----------------------------Original message----------------------------
>
>
>Hello, I have a question, I'm a relative newby, been doing pottery for
about
>3 and a half years. I've only worked with low fire clays. I wanted to
try
>some funcional ware so i ordered clay from Amaco (brickyard) in
>Indianapolis which is cone 6. I called the company and asked them, just to
>make sure that I was right, if I should bisque fire it to the same temp as
>my low fire clay. The woman told me, fire it to cone 5. I didn't think
>that is right, and I questioned her some more, but she said that it was
high
>fire clay and it should be bisqued at cone 5. Now, I don't think this is
>right. I have a load ready for the kiln, but I am not quite confident
>enough to follow my own instincts. Can the list help me? Thanks, Sherry
>Morrow
Hill family on wed 22 dec 99
Sherry
Whatever you do, don't bisque to cone 5!
When bisque firing my cone 6 clays I fire to cone 06 in the kiln sitter.
This is approximately 1000 degrees celcius. I like to fire the last part of
the bisque very slowly ( 900 - 1000 degrees ) to burn off any nasties in
the clay bodies that might cause problems in the glaze firing.
Best of luck,
Dan Hill
Eastern Ontario, Canada.
----------
> From: beardiherd
> To: CLAYART@LSV.UKY.EDU
> Subject: stoneware bisque
> Date: Monday, December 20, 1999 4:02 PM
>
> ----------------------------Original message----------------------------
>
>
> Hello, I have a question, I'm a relative newby, been doing pottery for
about
> 3 and a half years. I've only worked with low fire clays. I wanted to
try
> some funcional ware so i ordered clay from Amaco (brickyard) in
> Indianapolis which is cone 6. I called the company and asked them, just
to
> make sure that I was right, if I should bisque fire it to the same temp
as
> my low fire clay. The woman told me, fire it to cone 5. I didn't think
> that is right, and I questioned her some more, but she said that it was
high
> fire clay and it should be bisqued at cone 5. Now, I don't think this is
> right. I have a load ready for the kiln, but I am not quite confident
> enough to follow my own instincts. Can the list help me? Thanks, Sherry
> Morrow
cyberscape on wed 22 dec 99
YO beardie,
The assumption was probably that you were going to use low fire bottled
glazes, which have the ability to stick to nonporous clays and mature
at a temperature lower than the clay. If this is the case, yes, bisquit
fire the ware to ^5, so that it will be nonporous and hard as rock. If
you are mixing glazes which you plan to fire to ^5, bisquit fire to
somewhere in the ^08-05 range, so that your glazes will adhere when you
apply them. The clay will mature during the glaze firing.
Harvey Sadow
Date: Mon, 20 Dec 1999 16:02:24 EST
From: beardiherd
Subject: stoneware bisque
----------------------------Original message----------------------------
Hello, I have a question, I'm a relative newby, been doing pottery for
about
3 and a half years. I've only worked with low fire clays. I wanted to
try
some funcional ware so i ordered clay from Amaco (brickyard) in
Indianapolis which is cone 6. I called the company and asked them, just
to
make sure that I was right, if I should bisque fire it to the same temp
as
my low fire clay. The woman told me, fire it to cone 5. I didn't think
that is right, and I questioned her some more, but she said that it was
high
fire clay and it should be bisqued at cone 5. Now, I don't think this
is
right. I have a load ready for the kiln, but I am not quite confident
enough to follow my own instincts. Can the list help me? Thanks, Sherry
Morrow
Mike Gordon on wed 22 dec 99
Hi,
Almost all clay for functional use should be bisqued at c/04 some people
go to 03 some to as low as 07. If you go too high the clay will vitrify
and not absorb the glaze. Mike
Nina Jones on wed 22 dec 99
------------------
Hi, Elizabeth,
I don't know if she should try putting low-fire glazes on the ware if she
intends to create functional pieces. I tried this (I liked the low-fire =
glaze
effects too=21(:)) and the glazes crazed, some worse than others.
Nina D. Jones
=40 njones=40winston.com
Southside Chicago
=3E=3E=3E elizabeth priddy =3Cepriddy=40my-Deja.com=3E 12/21/99 01:40PM =
=3E=3E=3E
----------------------------Original message----------------------------
I think I know what might be going on.
if you still want to use your low fire glazes on
the high fire clay, you can =22bisque=22 it to 5 and
then fire your glaze firing to the appropriate
temp for glazes. it is harder to fit and will
not stick as well when you are glazing, but I am
told it works.
Technically, you should bisque your clay to
about =5E05, same as your glaze temp, and then
fire the work with cone 5 glazes to cone 5.
i hope this makes sense. I don't recommend it,
but i have heard it works. i doubt that the
low glazes fit the high fire clay properly, but
there are some visual effects that the folks I
talked to wanted to still get for decorative
effects.
---
Elizabeth Priddy
email: epriddy=40usa.net
http://www.angelfire.com/nc/clayworkshop
Clay: 12,000 yrs and still fresh=21
On Mon, 20 Dec 1999 16:02:24 beardiherd wrote:
=3E----------------------------Original message----------------------------
=3E
=3E
=3EHello, I have a question, I'm a relative newby, been doing pottery for =
about
=3E3 and a half years. I've only worked with low fire clays. I wanted to =
try
=3Esome funcional ware so i ordered clay from Amaco (brickyard) in
=3EIndianapolis which is cone 6. I called the company and asked them, just =
to
=3Emake sure that I was right, if I should bisque fire it to the same temp =
as
=3Emy low fire clay. The woman told me, fire it to cone 5. I didn't think
=3Ethat is right, and I questioned her some more, but she said that it was =
high
=3Efire clay and it should be bisqued at cone 5. Now, I don't think this is
=3Eright. I have a load ready for the kiln, but I am not quite confident
=3Eenough to follow my own instincts. Can the list help me? Thanks, Sherry
=3EMorrow
=3E
--=3D=3D Sent via Deja.com http://www.deja.com/ =3D=3D--
Share what you know. Learn what you don't.
beardiherd on wed 22 dec 99
Hi Sharry, thanks. I just knew that woman was a dummy. I am so glad I
waited and asked the list. Then, I kept thinking, maybe she knows something
I don't. GUESS NOT! Well anyway, thanks from cold blowy Michigan where
someother dummy was digging and just cut the water mainline....sigh. I
suppose you have balmy breezes and green trees. Once I get water again, I'm
going to go make some more cups. You know, I was thrilled when I got this
order, my first big one. Now I know what everyone is talking about. Maybe
someday I'll actually be a potter! Have a good holiday. Sherry Morrow
Joan & Tom Woodward on wed 22 dec 99
Would a higher temperature (04) absorb less glaze? Would less absorption
mean more or less color? I know I need to take some glaze workshops, but
until I can fit it in, I really appreciate the help I get here. Alaska Joan
----- Original Message -----
From: Karin Abromaitis
To:
Sent: Tuesday, December 21, 1999 10:41 AM
Subject: Re: stoneware bisque
> ----------------------------Original message----------------------------
> Your gut instinct is right. A cone 6 stoneware clay should be bisque
fired
> much lower. Depending on how you want the bisqued pots to absorb glaze,
> bisque temperatures can vary from 08 to 04. Personally, I bisque my ware
at
> 05. Ask around, try a couple of different temps and see what works best
for
> you.
>
> Karin A.
>
> -----Original Message-----
> From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.UKY.EDU]On Behalf
> Of beardiherd
> Sent: Monday, December 20, 1999 4:02 PM
> To: CLAYART@LSV.UKY.EDU
> Subject: stoneware bisque
>
>
> ----------------------------Original message----------------------------
>
>
> Hello, I have a question, I'm a relative newby, been doing pottery for
about
> 3 and a half years. I've only worked with low fire clays. I wanted to
try
> some funcional ware so i ordered clay from Amaco (brickyard) in
> Indianapolis which is cone 6. I called the company and asked them, just to
> make sure that I was right, if I should bisque fire it to the same temp as
> my low fire clay. The woman told me, fire it to cone 5. I didn't think
> that is right, and I questioned her some more, but she said that it was
high
> fire clay and it should be bisqued at cone 5. Now, I don't think this is
> right. I have a load ready for the kiln, but I am not quite confident
> enough to follow my own instincts. Can the list help me? Thanks, Sherry
> Morrow
Percy Toms on wed 22 dec 99
Hi Sherry
IMHO, it's inconceivable that any viable, workable clay would not be rendered
into a rigid ceramic structure, aka bisque, by cone 02, say.
Did you speak to the manager? I'd want to talk to someone at the company that
I _knew_ was technically expert. Or you might find yourself being led up the
garden path by a well meaning person who overestimates their own know-how and
irresponsibly sows havoc as a result.
We should all learn to detect and avoid these people like the plague!
That said, if Amaco don't clarify and explain what you were told,
my vote would be for bisquing at cone 05. Or 04, tops.
Warning: Usual disclaimers! Best to always test before committing to a batch!
good luck
Ned
In a message dated 20/12/99 1:03:31 PM, beardiherd@tdi.net writes:
i ordered clay from Amaco (brickyard) in
>Indianapolis which is cone 6. I called the company and asked them, just
>to
>make sure that I was right, if I should bisque fire it to the same temp
>as
>my low fire clay. The woman told me, fire it to cone 5. I didn't think
>that is right, and I questioned her some more, but she said that it was
>high
>fire clay and it should be bisqued at cone 5. Now, I don't think this
>is
>right.
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