Jodopottery@AOL.COM on thu 18 may 00
I have been using GlazeChem software for several years and find it is a great
program that does most of what I need. Unfortunately I have never had any
formal class in how to use it or what the information means. Over time I have
picked up information, such as out of Val Cushings notebook from Alfred,
which gives some indications on how much of a particular flux you may need
for it to be classified as a i.e. Calcium glaze. These bits of information
just have not come together to the point where I know the problem or expected
problem with a glaze from the formula. Can any of you folks recommend a
class, book or other resource where I can learn more about the meaning of the
results I get from my software? By way of example, I would love to know what
is conveyed by the ratios of Alkali - Neutral - Acid? Or what does the
coefficient of expansion tell me? Thanks in advance for your usual help.
John Weber
Manakin-Sabot, VA
Gregory D Lamont on fri 19 may 00
At 08:17 AM 5/18/00 -0400, you wrote:
>I have been using GlazeChem software for several years and find it is a great
>program that does most of what I need. Unfortunately I have never had any
>formal class in how to use it or what the information means. Over time I have
>picked up information, such as out of Val Cushings notebook from Alfred,
>which gives some indications on how much of a particular flux you may need
>for it to be classified as a i.e. Calcium glaze. These bits of information
>just have not come together to the point where I know the problem or expected
>problem with a glaze from the formula. Can any of you folks recommend a
>class, book or other resource where I can learn more about the meaning of the
>results I get from my software? By way of example, I would love to know what
>is conveyed by the ratios of Alkali - Neutral - Acid? Or what does the
>coefficient of expansion tell me? Thanks in advance for your usual help.
>John Weber
>Manakin-Sabot, VA
>
>______________________________________________________________________________
Hi John,
The two books I've found most helpful have been Robin Hopper's The Ceramic
Spectrum: A Simplified Approach to Glaze and Color Development (Chilton
Book Co. ISBN 0-8019-7275-2) and Greg Daly's Glazes and Glazing Techniques
(Gentle Breeze Publishing. ISBN 0-9650786-0-4).
Another helpful device for learning what the various components of a glaze
are contributing to the mix, and what one might expect--in very general
terms--in the fired result, is a very basic freeware DOS program by Richard
Zakin that is available from the SDSU CeramicsWeb site
:http://art.sdsu.edu/ceramicsweb/ under the "software" heading.
Also, be sure to read the posts from the "glaze gurus" such as Ron Roy,
Paul Lewing, John Post and the others as they explain what's going on with
a particular glaze formula someone has posted to Clayart. Much can be
gleaned from their analyses of these glazes.
Good Luck,
Greg
E-mail address:
gdlamont@isunet.net
Pottery Web Page:
http://www.ourwebpage.net/greglamont/
Mailing address and Phone:
Greg Lamont
3011 Northwood Drive
Ames, IA 50010-4750
(515) 233-3442
Dannon Rhudy on fri 19 may 00
.....Unfortunately I have never had any
>formal class in how to use it or what the information means.
........Can any of you folks recommend a
>class, book or other resource where I can learn more about the meaning of the
>results I get ....
I recommend that you take one of Ron Roy's summer classes,
they last five days I believe, at Canador. He uses Insight
software, but for your purposes that would still be fine.
You'd learn another software, and more importantly you'd
learn what component ratios to look for, and how to
trouble shoot a problem glaze. The classes are unbelievably
inexpensive - I can't remember the precise amount I saw listed,
but you can check with Ron or the school up there. A class
such as that is going to be your easiest/quickest route
to acquiring the information that you need.
regards
Dannon Rhudy
L. P. Skeen on fri 19 may 00
Can any of you folks recommend a class, book or other resource where I can
learn more about the meaning of the results I get from my software? By way
of example, I would love to know what is conveyed by the ratios of Alkali -
Neutral - Acid? Or what does the coefficient of expansion tell me? Thanks
in advance for your usual help. > >John Weber
> >Manakin-Sabot, VA
John,
Ron Roy will be here (NC) to teach a class this fall. Email me privately
for more information.
Lisa
David Hewitt on sat 20 may 00
Hello John,
A book that I would recommend is Ian Currie's 'Stoneware Glazes - A
Systematic Approach'.
Also, in considering the significance of various ratios, one method that
Mike Bailey and I use is to analyse a glaze recipe and then plot the %
basic, amphoteric and acidic oxides on to a triaxial graph. This tells
you where this recipe relates to the probable eutectic point and hence,
if you wish to adjust the recipe for a particular result, you can see in
which direction this should go. This may sound complicated, but if you
wish to read further on this you can do so on my web site
http://www.dhpot.demon.co.uk
under 'Eutectics & Phase Equilibrium Diagrams'
This method of displaying a glaze is incorporated in my 'Glaze Workbook'
glaze calculation program and also in Matrix, which also enables you see
the triaxial plot graphically on the screen.
Mike Bailey has just finished writing a book on 'Cone 6 Glazes' which I
hope will shortly be published by A & C Black. I have assisted in some
of the glaze testing work, and this approach of triaxial plotting was
used in developing the various base glazes.
Also on this site is a section on 'Calculating Crazing' which may help
with that part of your question.
David
In message , Jodopottery@AOL.COM writes
>I have been using GlazeChem software for several years and find it is a g=
>reat
>program that does most of what I need. Unfortunately I have never had any
>formal class in how to use it or what the information means. Over time I =
>have
>picked up information, such as out of Val Cushings notebook from Alfred,
>which gives some indications on how much of a particular flux you may nee=
>d
>for it to be classified as a i.e. Calcium glaze. These bits of informatio=
>n
>just have not come together to the point where I know the problem or expe=
>cted
>problem with a glaze from the formula. Can any of you folks recommend a
>class, book or other resource where I can learn more about the meaning of=
> the
>results I get from my software? By way of example, I would love to know =
>what
>is conveyed by the ratios of Alkali - Neutral - Acid? Or what does the
>coefficient of expansion tell me? Thanks in advance for your usual help.
>John Weber
>Manakin-Sabot, VA
>
--
David Hewitt
David Hewitt Pottery ,
7 Fairfield Road, Caerleon, Newport,
South Wales, NP18 3DQ, UK. Tel:- +44 (0) 1633 420647
FAX:- +44 (0) 870 1617274
Web site http://www.dhpot.demon.co.uk
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