Susan H. Park on sat 12 apr 97
I apprecitate all of the responses that I have received from people on the
list - I have received the Scottish Pottery book from my library - and am
digging in to the beginnings of glaze technology. Ian Curry at first
scared me, so I read quite a bit of McKee and Rhodes. I got hold of Robin
Hoppers Ceramic Spectrum and it was easy for a novice like myself to
understand and I had intended to simply use his format, however, after
looking at Curry again, I think that his might be the way to go for
beginnning to understand the ways that silica and alumina relate to one
another in base glazes. So...here are my initial plans (open to
suggestions and modifications) and questions:
I plan to do some firings of single materials, as outlined by
Robin Hopper, in order to understand how heat effects these single
materials.
The next part is where I need the help, particularly from anyone who is
working through Ian Currie's manual by themself:
Here are the question(s) of the day - If you are doing this by yourself, how are
of glazes - the book suggests, I think, no less than 300 grams per corner
glaze. The book also suggests doing this with 10 people. How do grams
relate to pounds? Is there a materials, cost efficient way to do this? I
do not want to waste my schools resources.
Thanks for anyone who can take the time to respond - I always appreciate
the willingness of all of you to help others.
Susan In Seattle
Lawrence Ewing on sun 13 apr 97
>The next part is where I need the help, particularly from anyone who is
>working through Ian Currie's manual by themself:
>Here are the question(s) of the day
Hi Susan,
I think you have made an excellent choice in deciding to follow Ian
Currie's glaze tech course. I know of no other that sytematically (as
the title of his book suggets) takes you through a set of exercises aimed
at increasing your understanding of the basic principles.
>The book also suggests doing this with 10 people.
Having worked through the whole book on my own I would thoroughly
recommend that you do the same dispite the time that might take. The
effort is well worthwhile. The sets will reveal the range of glazes
which can eventuate from varying the SiO2 and Al2O3 as well as showing
you the influence of each of the main flux oxides on colour texture and
opacity.
> - the book suggests, I think, no less than 300 grams per corner glaze.
300 grams is equivalent to 10.59 ounces (grammes x 0.0353 = ounces)
In the volumetric blending process used by Currie it is very important to
ensure that the VOLUME of each corner glaze is the same before dispensing
into the individual sample pottles. After you have made up each
individual glaze in the blend you may allow them to settle over night so
that you can decant off water from the samples that are too runny
(usually around the glazes at Corner C). Sometimes the glazes at corners
A and B are too thick and may need some water added to adjust their
thickness for consistency over the whole blend.
>Is there a materials, cost efficient way to do this?
>I do not want to waste my schools >>resources.
I would follow Currie's instructions carefully. The only way to reduce
costs is the settle for volumes in the individual pootles which make up
the blend. However the smaller the quantities that you are mixing the
greater the chance of error.
Susan if you are equiped with a Macintosh computer you may be interested
in having a look at the glaze calculation program called MATRIX which
will generate line, triaxial and quadraxial blends of various sizes with
instructions for making up the blends using the volumetric blending
technique advocated by Currie. The program provides you with all of the
information which you need to created the blend and generates the recipes
and unity formula for each of the glazes in the blend. If you are
interested in this I can send you a free demonstration version of this
software.
Keep us in touch with your progress as you work through Currie. I have
used this approach in my glaze technology teaching program at the School
of Art in Dunedin, New Zealand now for some years now (since his book was
first published) with excellant results.
Regards
Lawrence Ewing
lewing@clear.net.nz
21 Slant St
Careys Bay
Dunedin
NEW ZEALAND
ph (03) 472 8801
Author of MATRIX Glaze Calculation Software for Macintosh
Gerstley on sun 27 apr 97
how are
of glazes - the book suggests, I think, no less than 300 grams per corner
glaze. The book also suggests doing this with 10 people. How do grams
relate to pounds? >
1 pound = 457 grams
< Is there a materials, cost efficient way to do this? I
do not want to waste my schools resources.>
I usually use 100 gram batches when mixing lots of test batches for a
glaze base, and then dump them all in one bucket when I'm done with the
test chips. The result usually makes a decent glaze base, and if it needs
to be adjusted, it's pretty easy to figure out what is already in there.
Tim
Gerstley@aol.com
Dave and Pat Eitel on mon 28 apr 97
>----------------------------Original message----------------------------
>>how are
>of glazes - the book suggests, I think, no less than 300 grams per corner
>glaze. The book also suggests doing this with 10 people. How do grams
>relate to pounds? >
>
>1 pound = 457 grams
Hmmm. I always thought it was 454 grams.
Later...Dave
Dave Eitel
Cedar Creek Pottery
Cedarburg, WI
pots@cedarcreekpottery.com
http://www.cedarcreekpottery.com
Gerstley on tue 29 apr 97
I ought to know better than to type a number without looking it up first.
One pound = 453.6 grams
Sorry.
Tim
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