Rose Bauer on tue 29 dec 09
Greetings All!
=3D20=3D20
I'm hoping someone will suggest a commercial cone six porcelain body that=
=3D
is particularly=3D20
responsive to soda.... I expect to be testing a few and suggestions would=
=3D
provide a great=3D20
starting point.=3D20
Thanking you in advance...=3D20
and Wishing you all the very best in 2010!
Cheers,
rose bauer
... in the shadow of the Canadian Rockies
Dan Hill on wed 30 dec 09
Hi Rose
I use Tuckers 6-50 which is more of a porcelaineous stoneware in my opinion=
.
It takes soda well, I use it mostly with glazes and slips over.
I also use Pottery Supply House 910 which acts more like a true porcelain
and fires very white with peachy flashing where the soda is light.
I don't know if these clays are available where you are but I would suggest
testing as many in a firing as you can get a hold of. I believe Dave Knott
who I have seen post to the list also fires ^6 porcelain in soda.
Dan Hill
Hill Pottery
www.wilnogardengallery.com
----- Original Message -----
From: "Rose Bauer"
To:
Sent: Tuesday, December 29, 2009 8:24 PM
Subject: cone six porcelain for soda?
Greetings All!
I'm hoping someone will suggest a commercial cone six porcelain body that i=
s
particularly
responsive to soda.... I expect to be testing a few and suggestions would
provide a great
starting point.
Thanking you in advance...
and Wishing you all the very best in 2010!
Cheers,
rose bauer
... in the shadow of the Canadian Rockies
Rose Bauer on wed 30 dec 09
Ceramics Canada in Calgary is my nearest supplier. They've been great and=
=3D
generally have a=3D20
good selection of Plainsman, Laguna and other specialty clay bodies on ha=
=3D
nd.=3D20
When I tested ^10 clays, I found not all were soda friendly and I ended u=
=3D
p with "odds and=3D20
sods" of clay taking up room in an already crowded studio.=3D20
=3D20
I really like the Coleman ^10 porcelain in a soda kiln and am looking for=
=3D
something equally=3D20
sweet at ^6. I don't have a pug mill so whatever clay/porcelain I end up =
=3D
using, it will have to=3D20
come in a box.
Thanks for your suggestions Dan.
cheers
rose bauer
... in the shadow of the Canadian Rockies
Paul Herman on fri 1 jan 10
Ron,
I think you need to clarify just what it is you are saying here. Are
you saying Coleman Porcelain leaked when it was completely vitrified?
Please explain why this clay should be considered not safe for
microwave use.
For all you newbies, Ron can always be depended upon to try to smear
other clay makers. What does he get out of it?
Best wishes,
Paul Herman
Great Basin Pottery
Doyle, California US
www.greatbasinpottery.com/
On Jan 1, 2010, at 6:18 PM, Ron Roy wrote:
> Just to repeat - I did some experiments with the Coleman porcelain.
> The measred fired absorption indicated it was almost completely
> vitrified at cone 6 half down and cone 7 just starting - it did leak.
> Pots made with that clay and fired to cone 6 should come with the
> warning - not microwave safe.
>
> RR
Ron Roy on fri 1 jan 10
Just to repeat - I did some experiments with the Coleman porcelain.
The measred fired absorption indicated it was almost completely
vitrified at cone 6 half down and cone 7 just starting - it did leak.
Pots made with that clay and fired to cone 6 should come with the
warning - not microwave safe.
RR
Quoting Rose Bauer :
> Ceramics Canada in Calgary is my nearest supplier. They've been
> great and generally have a
> good selection of Plainsman, Laguna and other specialty clay bodies on ha=
nd.
>
> When I tested ^10 clays, I found not all were soda friendly and I
> ended up with "odds and
> sods" of clay taking up room in an already crowded studio.
>
> I really like the Coleman ^10 porcelain in a soda kiln and am
> looking for something equally
> sweet at ^6. I don't have a pug mill so whatever clay/porcelain I
> end up using, it will have to
> come in a box.
>
> Thanks for your suggestions Dan.
>
> cheers
> rose bauer
> ... in the shadow of the Canadian Rockies
>
Steve Mills on sat 2 jan 10
Paul Herman
With respect I think YOU need to explain in full the sweeping derogatory
statement made at the end of your post!
Steve M
2010/1/2 Paul Herman
> Ron,
>
> I think you need to clarify just what it is you are saying here. Are
> you saying Coleman Porcelain leaked when it was completely vitrified?
> Please explain why this clay should be considered not safe for
> microwave use.
>
> For all you newbies, Ron can always be depended upon to try to smear
> other clay makers. What does he get out of it?
>
> Best wishes,
>
> Paul Herman
>
> Great Basin Pottery
> Doyle, California US
> www.greatbasinpottery.com/
>
>
>
>
> On Jan 1, 2010, at 6:18 PM, Ron Roy wrote:
>
> Just to repeat - I did some experiments with the Coleman porcelain.
>> The measred fired absorption indicated it was almost completely
>> vitrified at cone 6 half down and cone 7 just starting - it did leak.
>> Pots made with that clay and fired to cone 6 should come with the
>> warning - not microwave safe.
>>
>> RR
>>
>
--
Steve
Bath
UK
www.mudslinger.me.uk
William & Susan Schran User on sat 2 jan 10
On 1/1/10 11:06 PM, "Paul Herman" wrote:
> I think you need to clarify just what it is you are saying here. Are
> you saying Coleman Porcelain leaked when it was completely vitrified?
> Please explain why this clay should be considered not safe for
> microwave use.
>
> For all you newbies, Ron can always be depended upon to try to smear
> other clay makers. What does he get out of it?
Paul,
I'm trying to understand why you wrote and believe Ron would "try to smear
other clay makers"?
I have followed Ron's contributions to Clayart for many years and have had
the pleasure of meeting/speaking with him at NCECA. I have also communicate=
d
with him personally on several occasions with technical questions which he
has always taken the time to response in a thoughtful manner. I can't recal=
l
any posting from Ron that would "smear" another clay maker without reason.
He does test clay for a clay maker and has pointed out the need to test
batches in order to deliver a consistent quality product, especially since
clay manufacturers are making clay bodies from a natural product that will
vary over time. He has the technical knowledge and expertise that few of us
have to assess the qualities of clay bodies.
Perhaps the concept of his smearing other clay makers is because some other
clay makers may not be testing their clay on a consistent basis and Ron has
questioned their practice. I have experienced the result of this practice,
receiving batches of clay with lumps or hard little bits from clay makers
that are nationally known.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Lee Love on sat 2 jan 10
I have better luck in cone 10 soda with Continental's B-Clay over their
porcelains. Isn't there a cone 6 Bmix?
--
Lee, a Mashiko potter in Minneapolis
http://mashikopots.blogspot.com/
"Ta tIr na n-=3DF3g ar chul an tI=3D97tIr dlainn trina ch=3DE9ile"=3D97that=
is, "Th=3D
e
land of eternal youth is behind the house, a beautiful land fluent
within itself." -- John O'Donohue
Nancy Gallagher on sat 2 jan 10
> I think you need to clarify just what it is you are saying here. Are
> you saying Coleman Porcelain leaked when it was completely vitrified?
> On Jan 1, 2010, at 6:18 PM, Ron Roy wrote:
> Just to repeat - I did some experiments with the Coleman porcelain.
> The measred fired absorption indicated it was almost completely
> vitrified at cone 6 half down and cone 7 just starting - it did leak.
-----------------
I am a newbie and didn't take it that way at all. The way I understood it,
Coleman porcelain is a cone 10 porcelain...meaning, it IS vitrified at cone
10 - NOT 6. If used at cone 6, you're
doing so at your own risk and it will leak.
Nancy
Lis Allison on sat 2 jan 10
Paul Herman - may I point out that the pursuit of excellence will always,
by definition, involve the criticism of what does not measure up.
Your comment seems rather harse to me - too much New Years eve perhaps?
Lis
--
Elisabeth Allison
Pine Ridge Studio
www.Pine-Ridge-Studio.blogspot.com
Clay on sun 3 jan 10
Ron Roy states clearly how he tests clay for leakage. It is the easiest
thing in the world to repeat the test. Any doubters can repeat the work.an=
d
send in a report. Clayart repects facts more than opinion!
I have enjoyed Ron Roy's thoughtful contributions for almost ten years now.
There has never been a trace of commercial prejudice in his contributions
and he has always been open about his connection with Tuckers
I J Townshend
in Macclesfield UK
Paul Herman wrote
> Ron,
> I think you need to clarify just what it is you are saying here. Are
> you saying Coleman Porcelain leaked when it was completely vitrified?
> Please explain why this clay should be considered not safe for
> microwave use.
> For all you newbies, Ron can always be depended upon to try to smear
> other clay makers. What does he get out of it?
> Best wishes,
> Paul Herman
> Great Basin Pottery
> Doyle, California US
> www.greatbasinpottery.com/
Rose Bauer on mon 4 jan 10
Ron, et al,
My apologies if my post implied the ^10 Coleman porcelain was fired to co=
=3D
ne ^6 in a soda=3D20
kiln...
It was not... the porcelain was fired to ^10 in a soda kiln.
cheers
rose
Clay on mon 4 jan 10
I'm resending this as the first one appears to be lost with Mel.
----- Original Message -----
Sent: Sunday, January 03, 2010 10:31 AM
Subject: Re: cone six porcelain for soda?
Ron Roy states clearly how he tests clay for leakage. It is the easiest
thing in the world to repeat the test. Any doubters can repeat the work.an=
d
send in a report. Clayart respects facts more than opinion!
I have enjoyed Ron Roy's thoughtful contributions for almost ten years now.
There has never been a trace of commercial prejudice in his contributions
and he has always been open about his connection with Tuckers
I J Townshend
in Macclesfield UK
>
> Paul Herman wrote
>
>> Ron,
>
>> I think you need to clarify just what it is you are saying here. Are
>
>> you saying Coleman Porcelain leaked when it was completely vitrified?
>
>> Please explain why this clay should be considered not safe for
>
>> microwave use.
>
>> For all you newbies, Ron can always be depended upon to try to smear
>
>> other clay makers. What does he get out of it?
>
>> Best wishes,
>
>> Paul Herman
>
>> Great Basin Pottery
>
>> Doyle, California US
>
>> www.greatbasinpottery.com/
>
Vince Pitelka on mon 4 jan 10
I hope Mel is okay. This is my third try at getting this posted so that it
will be in the discussion now. One of those other ones might reappear in a
day or two.
I J Townshend wrote:
"I have enjoyed Ron Roy's thoughtful contributions for almost ten years now=
.
There has never been a trace of commercial prejudice in his contributions
and he has always been open about his connection with Tuckers."
I would have to second IJ's statement above. Having a highly-respected
expert like Ron Roy as a regular member who contributes so generously has
been one of the things that makes Clayart such a great discussion forum.
Those of us who are lucky to know Ron in person through the NCECA
conferences and other venues know him to be a warm and compassionate human
being. He works for Tucker because they respect and value his expertise,
and they benefit greatly from it, but I believe him to be completely fair
and impartial in his judgment, and if he ever makes comments that seem to
favor Tuckers, they must be well-founded.
At the same time, Paul Herman is a good friend of mine and I appreciate and
admire his feisty spirit. He's somehow gotten the wrong impression of Ron
Roy, but he's right about most things. It's a shame Paul has not had the
pleasure of meeting Ron in person and getting to know him a bit, but maybe
that can happen someday. I told Paul that he'll really like Ron when he
meets him in person. I know that to be true. They actually have quite a
bit in common.
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Tech University
vpitelka@dtccom.net; wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka
Ron Roy on wed 6 jan 10
Hi Rose,
I just wanted to make sure anyone who uses it at cone 6 knows it will
leak and absorb water even though it appears to be vitrified.
My original interest was sparked by a request many months ago. I got
samples from two different places and did the tests. The bars
indicated 0.2 to 0.4 absorption after being boiled for 2 hours. That
would usually mean no absorption but the cylinders I threw and filled
with water showed water was getting through.
Clay that absorbes water will heat up when used in a microwave oven
and can burn the user.
RR
Quoting Rose Bauer :
> Ron, et al,
>
> My apologies if my post implied the ^10 Coleman porcelain was fired
> to cone ^6 in a soda
> kiln...
>
> It was not... the porcelain was fired to ^10 in a soda kiln.
>
> cheers
> rose
>
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