Hal Mc Whinnie on wed 31 dec 03
happy new year.
many of the discussions on clayart seem to leave out one class of ceramic
artists, the handbuilders.
here are some glazes for them
artigas glaze 653
cone 8-10
1250c
spar 40
silica 25
whiting 20
epk 15
rutile 15
cobalt 10
analysis k20 0.17
na20 0.06
cao 0.77
al2o3 0.48
tio2 0.72
sio2 3.81
ratios
basic/amp 1-0.48
basic/acid 1-4.53
amp/acid 1-9.36
expansion 0.352
note
some of the glaze experts seem only to focus on safe glazes.
many of the more interesting glazes contain materials that are forbidden.
this is the basic question. if one does handbuilding and non functional work
they can use many more glazes elements and get far more results than with the
so-called safe glases
we all don not make coffee cups only.
Teresa Testa on wed 31 dec 03
Thanks for the new recipe. I will be sure to try it in my next firing. I do
handbuilt sculptural porcelian. Any unique glaze suggestions would be
welcome. Check out my new web site if you want to see some of my work.
www.windancerstudio.com
Teresa
Windancer Studio
Brian on thu 1 jan 04
On 31/12/03, Hal Mc Whinnie wrote...
>
>many of the discussions on clayart seem to leave out one class of ceramic
>artists, the handbuilders.
>
>some of the glaze experts seem only to focus on safe glazes.
>
>many of the more interesting glazes contain materials that are forbidden.
>
Too right Hal!
On this topic...............
Over the years i have photographed hundreds of fired simple mixtures
that yielded unique and unexpected textures that are easy to adapt to
handbuilt, decorative, architectural and sculptural ceramics
I have just finished designing a set of wall charts that show 90 of
these mixtures that are also very flexible in temperature range.
They are printed on good quality paper and serve the dual purpose as
educational and decorative posters
Have a look at http://www.gartside.info/posterimages.htm and contact
me off list if you have any interest or questions
Brian Gartside
--
Brian
http://www.gartside.info
Pukekohe, New Zealand
Ron Roy on fri 2 jan 04
Hi Hal,
First of all - many functional pots are hand made - slab plates are very
popular for instance.
The reason I comment on stable glazes is not to forbid the unstable glazes
- what chance would I have to stop any potter from doing anything?
It is to provide vital information to anyone who wants to make functional
ware - anyone who has enough craftsmanship to do the job properly.
In other words to be able to choose appropriate glazes for the job.
Either you don't want potters to be able to choose or you don't know which
glazes are stable - or both.
New information can be threatening - I understand that. And I understand
that ridiculing it is an easy way to get around having to learn it - never
the less it is important - not only to the success of every potter that has
to make a living selling functional pots - but to the general state of
studio pottery everywhere.
As a group we have ignored the aspect of durable glazes far too long.
Who cares what you put on non functional ware - or on the outside of pots -
but knowing the difference is crucial for liner glazes.
The idea that stable glazes cannot be interesting needs to be examined as
well but if we are going to discuss that you must be willing to change some
of your ideas.
RR
>note
>
>some of the glaze experts seem only to focus on safe glazes.
>many of the more interesting glazes contain materials that are forbidden.
>this is the basic question. if one does handbuilding and non functional work
>they can use many more glazes elements and get far more results than with
>>the so-called safe glases
>
>we all don not make coffee cups only.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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