Jeff Tsai on wed 14 jan 04
I think taylor had it right, you should be able to do simple math to come up
with the new formula.
I think the hyperglaze feature you're thinking about was one that broke a set
of glaze ingredient down into a unity formula and then through some simple
trial and error, you could recreate that unity formula by putting in various
glaze materials and the computer would automatically give you amounts that
re-satisfied the formula. I don't think you need to go about this rather lengthy
route as it takes a while by hand.
-jeff
iandol on thu 15 jan 04
Dear Friends,
Do they teach people how to design glazes to specification in the =
hallowed halls of academe?
Or is ceramic training and education ruled by Serendipity?
So if not? why not?
And if so, should we care?
Best regards,
Ivor Lewis. Redhill, South Australia
Krista Peterson on fri 16 jan 04
>Do they teach people how to design glazes to specification in the hallowed halls of academe?
>Or is ceramic training and education ruled by Serendipity?
Arizona State's ceramic department has a wonderful glaze and clay calculation class(they are 2 separate classes).
Very intense, I learned a lot. We had assignments that focused on issues like crazing, crawling, color etc. And we learned how to use the Hyperglaze software. So yes, from that I feel I could definitely come up with a specific glaze, though I would need lots of time to putter with it. Clay bodies too. Man! I could spend all my time just researching glazes. If anyone knows of a job where I could research glazes all day, pipe up!
The part that's left to serendipity is the practical, business end of it.
Krista Peterson
iandol on sun 18 jan 04
Dear Krista Peterson,=20
Thank you for your response. Sounds like you did two interesting =
courses.
I wonder if you could be specific. Were you instructed how to create a =
glaze from first principles, to meet a specification for surface =
texture, intensity and tone of defined hue, optical transmission and =
reflectivity as well as the obvious attributes of chemical stability, =
compatibility of thermal coefficient of expansion and maturity =
temperature? or did you rely on what the glaze calculation program could =
do for your?
Well I hope you get that posting to a research position. You might apply =
to Arabia in Finland.
Best regards,
Ivor Lewis. Redhill, South Australia
Krista Peterson on sun 18 jan 04
>Were you instructed how to create a glaze from first principles, to meet a=
specification for surface texture, >intensity and tone of defined hue, opt=
ical transmission and reflectivity as well as the obvious attributes of >ch=
emical stability, compatibility of thermal coefficient of expansion and mat=
urity temperature? or did you rely on >what the glaze calculation program c=
ould do for your?
In short, yes.No. Each assignment focused on only one attribute, for instan=
ce, in the assignment on crawling we all had a base glaze recipe and we had=
to make it crawl by changing the recipe.Dump a bunch of mag carb in it, ea=
sy. We used hyperglaze to keep track of the Si/Al ratio and RO's and to do =
the calculations. We were taught how to do the calculations by hand, we wer=
e only the second group of students to be using the hyperglaze software so =
our teacher thought that we should know what previous students had to go th=
rough.;>) I could not DO those calculations now but I have my notes...somew=
here.. and could refer to them. After our experiments we had to write a rep=
ort on our observations and conclusions and show our test tiles. We all tal=
ked about the results as a group. She had us focus on one thing at a time s=
o that we could see what causes certain kinds of phenomena. The classes are=
so intense that she has students take the clay class in the spring so that=
you would have the summer to digest it and then the glaze class in the fal=
l instead of taking them back to back. Although I ended up taking the class=
es back to back, otherwise, I would have had to wait an extra semester to g=
raduate. My teacher allowed a few of us to do it that way. It was hard to j=
ump into all the different chemicals at once. With claybodies there's not s=
o many ingredients to deal with so it gets your feet wet as to how they all=
interact. But when you get hit upside the head with the MINIMUM 30-40 ingr=
edients used in glazes......WOW! It would have been better to take the clay=
class first but I did well anyways.=20
It's been 6 or 7 years since I took those classes and I can't believe what =
I am remembering now that you got me going. I hope I answered your question=
s.=20
Take care
Krista Peterson=20
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