Tony Ferguson on wed 24 apr 02
Hello,
There are a couple of ways of dealing with this issue:
1. glaze the pot when it is leather hard on the
inside
2. Wet (dip the pot in water) the outside of the pot
and then glaze the inside.
Tony Ferguson
--- Earl Brunner wrote:
> Sometimes glazes that do not "fit" the clay well can
> break the pot if the pot is only glazed on one side.
> I have seen some glazes that needed the glaze on
> the inside and outside in order to "balance" the
> stresses that the glaze was putting on the pot.
> Since each clay and glaze is different, this is one
> of those times where you will probably just have to
> test. A good test to do would be the sudden
> temperature change from hot to cold or cold to hot.
>
> Marianne Lombardo wrote:
>
> > Many years ago, I saw some coffee mugs that were
> glazed on the inside and the lip only.
> >
> > Assuming I fire the clay to maturity, can anyone
> foresee any possible problems using this technique?
> >
> > Marianne Lombardo
> > Omemee, Ontario, Canada
> >
> >
>
____________________________________________________________________________
__
> > 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.
>
> --
> Earl Brunner
> http://coyote.accessnv.com/bruec
> mailto:bruec@anv.net
>
>
____________________________________________________________________________
__
> 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.
=====
http://photos.yahoo.com/fergyart
Tony Ferguson
Shino & Ash Stoneware & Porcelain, Raku
fergyart@yahoo.com
(218) 727-6339
http://www.geocities.com/fergyart/fergyartmainpage.html
__________________________________________________
Do You Yahoo!?
Yahoo! Games - play chess, backgammon, pool and more
http://games.yahoo.com/
Marianne Lombardo on wed 24 apr 02
Many years ago, I saw some coffee mugs that were glazed on the inside =
and the lip only. They felt so nice on the outside. I loved the =
contrast of the shiny glaze inside and the natural look on the outside. =
I remember asking about them and being told they were stoneware, and =
didn't need the glaze on the outside. At that time, I had no idea what =
stoneware was, really. I must have really liked them because I still =
remember after more than 20 years.
I'd like to make some mugs like this using Tucker's Mid Red ^6 stoneware =
clay. =20
Assuming I fire the clay to maturity, can anyone foresee any possible =
problems using this technique?
Marianne Lombardo
Omemee, Ontario, Canada
Maid O'Mud on wed 24 apr 02
I use Tucker Mid Cal 0 and leave bare patches on my dinnerware to contrast
against the blue. It looks fabulous! I have been using some of the bowls
for about a year. They are in and out of the dishwasher constantly and they
still look fresh from the kiln ;-)
I fire ^6 almost touching.
HTH
From: "Marianne Lombardo"
Many years ago, I saw some coffee mugs that were glazed on the inside and
the lip only. They felt so nice on the outside. I loved the contrast of
the shiny glaze inside and the natural look on the outside. I remember
asking about them and being told they were stoneware, and didn't need the
glaze on the outside. At that time, I had no idea what stoneware was,
really. I must have really liked them because I still remember after more
than 20 years.
I'd like to make some mugs like this using Tucker's Mid Red ^6 stoneware
clay.
Assuming I fire the clay to maturity, can anyone foresee any possible
problems using this technique?
Marianne Lombardo
Omemee, Ontario, Canada
____________________________________________________________________________
__
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.
Earl Brunner on wed 24 apr 02
Sometimes glazes that do not "fit" the clay well can break the pot if the
pot is only glazed on one side. I have seen some glazes that needed the
glaze on the inside and outside in order to "balance" the stresses that the
glaze was putting on the pot. Since each clay and glaze is different, this
is one of those times where you will probably just have to test. A good
test to do would be the sudden temperature change from hot to cold or cold
to hot.
Marianne Lombardo wrote:
> Many years ago, I saw some coffee mugs that were glazed on the inside and
the lip only.
>
> Assuming I fire the clay to maturity, can anyone foresee any possible
problems using this technique?
>
> Marianne Lombardo
> Omemee, Ontario, Canada
>
>
____________________________________________________________________________
__
> 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.
--
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net
Paul Taylor on fri 26 apr 02
Dear Marrian and Earl
I glaze inside my pots and about a third to a quarter of the way down. I
spray a thin coat of glaze over the body to give it a slight gloss and seal
the pores of the clay .
This does not work with plates because the spray would stick them to the
shelves. With the repeated heating and cooling to oven temperature the
glaze pulls the body apart - eventually - it is like the pot ages very fast
.
With just hot liquids It does not matter. The pots are quiet substantial
and I think the light spray may make a difference - so far no complaints . I
have had word that the pots wear exceptionally well apart from plates which
I now glaze all over. You can see the designs on the webb page. The glaze
fits the pot very well - a slight compression on the blue. The celadon does
not fit as well even though I use less fluxes to compensate for the iron.
--
Regards from Paul Taylor
http://www.anu.ie/westportpottery
In time the biggest hammer will fail to smash a nut that is the nature of
'disaster' - but also 'hope'.
> From: Earl Brunner
> Reply-To: Ceramic Arts Discussion List
> Date: Wed, 24 Apr 2002 19:24:53 -0700
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: Re: Stoneware Mugs No Glaze Outside Question
>
> Sometimes glazes that do not "fit" the clay well can break the pot if the
pot
> is only glazed on one side. I have seen some glazes that needed the glaze
on
> the inside and outside in order to "balance" the stresses that the glaze
was
> putting on the pot. Since each clay and glaze is different, this is one
of
> those times where you will probably just have to test. A good test to do
> would be the sudden temperature change from hot to cold or cold to hot.
>
> Marianne Lombardo wrote:
>
>> Many years ago, I saw some coffee mugs that were glazed on the inside and
the
>> lip only.
>>
>> Assuming I fire the clay to maturity, can anyone foresee any possible
>> problems using this technique?
>>
>> Marianne Lombardo
>> Omemee, Ontario, Canada
>>
Ron Roy on sun 28 apr 02
Earl is right about this - but if that is the case you are living
dangerously. The expansion/contrastion of such glazes is too low for
functional ware if the ware breaks with the glaze only on the inside.
What can happen - even when the such a glaze is inside and outside - uneven
application can make a big difference.
It is much safer to use glazes that will sometimes craze - if that happens
- lowering the expansion just a bit more will result in the best situation.
RR
>Sometimes glazes that do not "fit" the clay well can break the pot if the
>pot is only glazed on one side. I have seen some glazes that needed the
>glaze on the inside and outside in order to "balance" the stresses that
>the glaze was putting on the pot. Since each clay and glaze is different,
>this is one of those times where you will probably just have to test. A
>good test to do would be the sudden temperature change from hot to cold or
>cold to hot.
Ron Roy
RR #4
15084 Little Lake Road
Brighton
Ontario
Canada - K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
| |
|
