Steve Slatin on wed 4 may 05
Anne --
I know how to do it by hand, either in the Seger
system (Rambling Gambling Man?) or straight molar
calc without 'normalizing' to a flux of one.
And I *never* do it by hand.
I have John's program, and I sometimes sit in front of
the boob tube in the evening with my wife and watch an
hour of stuff while doing subs, to see what the
outcomes will be. It's an interesting way of getting
to know materials without either spending hundreds of
hours doing calcs or making dozens and dozens of
buckets of test glazes.
Best wishes -- Steve Slatin
--- Anne Webb wrote:
> Just curious, how many people out there ..on
> clayart, i guess..actually know
> how to do glaze calculation by hand?
> if not, do you know where u can go to learn it?
>
> Anne
Steve Slatin --
Sera que ela mexe o chocalho ou o chocalho e que mexe com ela
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Anne Webb on wed 4 may 05
Lily wrote...
>As to the CD programs. I hear you, I agree with you....But again and once
>more I err on the frugal side. There are many among us who have money and
>to whom $50-100 is no big deal. There are many among us who make real
>sacrifices so they can take that clay class, save for a wheel....It is to
>them I say (standing on my Yardley Lavender Soap Box) you can do it with
>pencil and paper, it takes longer, it is just as much fun, and there were
>some 100 years between Hermann Seger and Computer Programs.
Hi Lily...
'just as much fun'... you go girl! :)
I think that these glaze programs make it possible for more people to
actually do their own analysis. The unscientific lot that most potters
are, glaze analysis is a daunting enough task without the thought of having
to do the 'long' method of calculation as well. Our time can be better
spent on analysis vs calculation, or trying to figure out where you entered
that wrong figure or added up the figures incorrectly. Its my experience
that if people struggle too much with a task, it shows; they have a tendency
to give up or not give it the time its due.
If mix your own glazes and want to do analysis, i think its a justifyable
expense. people can justify budgeting and paying an extra several hundred
dollars to have a motorized wheel vs an unmotorized one, or have a kiln with
a controller. Its all a matter of priority.
Just curious, how many people out there ..on clayart, i guess..actually know
how to do glaze calculation by hand?
if not, do you know where u can go to learn it?
Anne
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URL Krueger on thu 5 may 05
As with many things on Clayart discussion about manually
calculating glaze formulas has gone to the extremes. I
don't know of anybody, except a rare few who enjoy doing
arithmetic calculations, who would want to use the manual
method as more than a learning exercise.
I do believe, however, that by calculating a glaze or two by
hand one can develop a deeper understanding of how a glaze
is built. Exactly how, or if, this helps you build a
better glaze I can not tell.
For those who are financially challenged and unable to
afford a glaze calculation program, or even computer to run
it on, there are tons of old computers around that can be
had for little, or nothing. Many of these will still have
a spreadsheet program on them. If one understands the
calculations then with a little effort they can build their
own glaze calculation program in a spreadsheet.
And, yes Anne, I can do it by hand; have done it by hand;
have built a spreadsheet to do it; and could teach anyone
the basics in an hour or two.
--
Earl K...
Bothell WA, USA
linda on thu 5 may 05
Hey Anne - I can do calculation by hand. I learned it at Univ. of Northern Colorado from
my professor Dr. Schumacker way back in the early 70's, and I still use it today.
I also have a couple of the glaze calc programs on my mac. A good place to look
regarding the "hand method" is chapter 13 of the third edition of Clay and Glazes for
the Potter by Rhodes.
I tend to think that most potters are scientists and/or geologists simply for the materials
we work with. Taking a combination of materials from the earth and changing them using
heat and fire is an experiment and an exploration that all scientists do. Most often, I find
myself so immersed in the calculation and the science of the clays and glazes, that I don't
produce any pots at all !!
I wish there was a national juried show somewhere just for potters to enter their line and
triaxial blends - sigh ...
TTFN - Linda
-----Original Message-----
From: Anne Webb
Sent: May 4, 2005 12:44 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Glaze Calculation - Long method..?
Lily wrote...
>As to the CD programs. I hear you, I agree with you....But again and once
>more I err on the frugal side. There are many among us who have money and
>to whom $50-100 is no big deal. There are many among us who make real
>sacrifices so they can take that clay class, save for a wheel....It is to
>them I say (standing on my Yardley Lavender Soap Box) you can do it with
>pencil and paper, it takes longer, it is just as much fun, and there were
>some 100 years between Hermann Seger and Computer Programs.
Hi Lily...
'just as much fun'... you go girl! :)
I think that these glaze programs make it possible for more people to
actually do their own analysis. The unscientific lot that most potters
are, glaze analysis is a daunting enough task without the thought of having
to do the 'long' method of calculation as well. Our time can be better
spent on analysis vs calculation, or trying to figure out where you entered
that wrong figure or added up the figures incorrectly. Its my experience
that if people struggle too much with a task, it shows; they have a tendency
to give up or not give it the time its due.
If mix your own glazes and want to do analysis, i think its a justifyable
expense. people can justify budgeting and paying an extra several hundred
dollars to have a motorized wheel vs an unmotorized one, or have a kiln with
a controller. Its all a matter of priority.
Just curious, how many people out there ..on clayart, i guess..actually know
how to do glaze calculation by hand?
if not, do you know where u can go to learn it?
Anne
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