John Rodgers on sun 18 may 03
If your clay vitrifies at cone six, it will be sealed and a glaze should
not be necessary except for ease of cleaning.
John Rodgers
Birmingham, AL
Bun Bun wrote:
> I know high fire objects do not need glazing inside, but what about a
> cone 6
> stoneware teapot?
>
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Bun Bun on sun 18 may 03
I know high fire objects do not need glazing inside, but what about a cone 6
stoneware teapot?
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Ron Roy on wed 21 may 03
You need to know - does your clay virify enough to preclude leaking - at
what ever temperature - if it is water tight you don't need glaze. Most
would want to be able to clean it up once in a while so they would want a
glaze.
Others would prefer not to ever clean a tea pot - just dry it out after use.
RR
>I know high fire objects do not need glazing inside, but what about a cone 6
>stoneware teapot?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
claybair on wed 21 may 03
So this brings me to ask about crazed glazes inside vitrified
teapots/bowls/teabowls etc.
Are they as safe as the interior of an unglazed teapot?
Is the issue the possibility of pieces/slivers breaking off?
Is there more of a bacteria growth issue and why?
If vitrified why do we bother glazing functional ware?
Inquirering mind want to know!
Gayle Bair
Bainbridge Island, WA
http://claybair.com
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Ron Roy
Sent: Tuesday, May 20, 2003 11:37 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Inside Teapots?
You need to know - does your clay virify enough to preclude leaking - at
what ever temperature - if it is water tight you don't need glaze. Most
would want to be able to clean it up once in a while so they would want a
glaze.
Others would prefer not to ever clean a tea pot - just dry it out after use.
RR
>I know high fire objects do not need glazing inside, but what about a cone
6
>stoneware teapot?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
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melpots@pclink.com.
Katey on wed 21 may 03
I would imagine that glazing, in the case of mid or high fire ware is a
matter of making cleaning easier. The smooth surface is easier to
clean. I too have a question about crazing and functional ware. Is
bacterial growth really an issue with a piece that is regularly used and
washed in a dishwasher? The high temp of the water in dishwashers is
supposed to be disinfective (is that a word?).
-Katey
claybair wrote:
>So this brings me to ask about crazed glazes inside vitrified
>teapots/bowls/teabowls etc.
>Are they as safe as the interior of an unglazed teapot?
>Is the issue the possibility of pieces/slivers breaking off?
>Is there more of a bacteria growth issue and why?
>If vitrified why do we bother glazing functional ware?
>Inquirering mind want to know!
>Gayle Bair
>Bainbridge Island, WA
>http://claybair.com
>
>-----Original Message-----
>From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Ron Roy
>Sent: Tuesday, May 20, 2003 11:37 PM
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Re: Inside Teapots?
>
>
>You need to know - does your clay virify enough to preclude leaking - at
>what ever temperature - if it is water tight you don't need glaze. Most
>would want to be able to clean it up once in a while so they would want a
>glaze.
>
>Others would prefer not to ever clean a tea pot - just dry it out after use.
>
>RR
>
>
>
>
>>I know high fire objects do not need glazing inside, but what about a cone
>>
>>
>6
>
>
>>stoneware teapot?
>>
>>
>
>Ron Roy
>RR#4
>15084 Little Lake Road
>Brighton, Ontario
>Canada
>K0K 1H0
>Phone: 613-475-9544
>Fax: 613-475-3513
>
>____________________________________________________________________________
>__
>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.
>
>
>
John Hesselberth on wed 21 may 03
On Wednesday, May 21, 2003, at 04:22 PM, Katey wrote:
> I too have a question about crazing and functional ware. Is
> bacterial growth really an issue with a piece that is regularly used
> and
> washed in a dishwasher?
Hi Katey,
I don't think there is a definitive answer to your question--only
opinions. I have heard of local health departments refusing to approve
a restaurant using crazed glazed dinnerware. But some probably don't
even know what crazing is.
It is my personal opinion that crazed glazes on food surfaces is poor
craftsmanship--but that is just one person's opinion. It is a fact
that crazing weakens pots lowering their breaking strength by as much
as 2/3 - 3/4. Cardew gives some data on this in Pioneer Pottery.
Regards,
John
http://www.frogpondpottery.com
http://www.masteringglazes.com
Ron Roy on tue 27 may 03
Hi Gayle,
I don't think crazing is much of a problem inside a tea pot - as long as
the clay is vitrified enough to stop water. You would only be dealing with
some mold if the pot were not dried out enough to stop it - some people do
have a problem with mould.
Pots that are meant to hold greasy food can be a problem - nothing like
rancid fat to put off the favour of delicate tasting food - and fish is
really a problem - the ware will smell for days and days.
Crazing is not that hard to deal with in most situations - I am surprised
that so many potters feel so helpless about this.
RR
>So this brings me to ask about crazed glazes inside vitrified
>teapots/bowls/teabowls etc.
>Are they as safe as the interior of an unglazed teapot?
>Is the issue the possibility of pieces/slivers breaking off?
>Is there more of a bacteria growth issue and why?
>If vitrified why do we bother glazing functional ware?
>Inquirering mind want to know!
>Gayle Bair
>Bainbridge Island, WA
>http://claybair.com
>
>-----Original Message-----
>From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Ron Roy
>Sent: Tuesday, May 20, 2003 11:37 PM
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Re: Inside Teapots?
>
>
>You need to know - does your clay virify enough to preclude leaking - at
>what ever temperature - if it is water tight you don't need glaze. Most
>would want to be able to clean it up once in a while so they would want a
>glaze.
>
>Others would prefer not to ever clean a tea pot - just dry it out after use.
>
>RR
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
claybair on tue 27 may 03
Ron,
Thanks for your response.
I do realize that technically crazing is not that hard to fix.
My issue is a personal preference. It appeals to me aesthetically!
I love the impression of antiquity and imperfection.
My compromise has been to glaze the interior of teapots, bowls, mugs etc.
with a stable liner and reserve my crazed look on the exterior.
Gayle Bair - just about as crazed as I can get!
Bainbridge Island, WA
http://claybair.com
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Ron Roy
Sent: Monday, May 26, 2003 10:20 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Inside Teapots?
Hi Gayle,
I don't think crazing is much of a problem inside a tea pot - as long as
the clay is vitrified enough to stop water. You would only be dealing with
some mold if the pot were not dried out enough to stop it - some people do
have a problem with mould.
Pots that are meant to hold greasy food can be a problem - nothing like
rancid fat to put off the favour of delicate tasting food - and fish is
really a problem - the ware will smell for days and days.
Crazing is not that hard to deal with in most situations - I am surprised
that so many potters feel so helpless about this.
RR
>So this brings me to ask about crazed glazes inside vitrified
>teapots/bowls/teabowls etc.
>Are they as safe as the interior of an unglazed teapot?
>Is the issue the possibility of pieces/slivers breaking off?
>Is there more of a bacteria growth issue and why?
>If vitrified why do we bother glazing functional ware?
>Inquirering mind want to know!
>Gayle Bair
>Bainbridge Island, WA
>http://claybair.com
>
>-----Original Message-----
>From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG]On Behalf Of Ron Roy
>Sent: Tuesday, May 20, 2003 11:37 PM
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Re: Inside Teapots?
>
>
>You need to know - does your clay virify enough to preclude leaking - at
>what ever temperature - if it is water tight you don't need glaze. Most
>would want to be able to clean it up once in a while so they would want a
>glaze.
>
>Others would prefer not to ever clean a tea pot - just dry it out after
use.
>
>RR
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
____________________________________________________________________________
__
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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