iandol on thu 22 jun 00
At last I have been able to put my hands on a copy of Ian Currie's book =
Stoneware Glazes, A Systematic Approach. It has been a most enjoyable =
read and I can understand the enthusiasm of those who have attended =
workshops with Ian for his methodology. I can see the logic which he =
introduces and think that isolating the fluxing oxides, keeping their =
content constant and altering the ratios of alumina and silica gives a =
good graphic representation which is easier to understand than if they =
were plotted on a triangle.
However, there is one thing which I cannot understand. I realise how the =
parallelograms form, representing the location maximum and minimum =
quantities of silica and alumina which would be appropriate for chosen =
mixtures of molecular flux combinations. What I cannot find in the text =
is how the dots which represent actual recipes are determined. Ian gives =
thirty five alternative mixtures to make up a test tile. These are not =
spaced at regular intervals on the plot. They do not seem to represent =
uniform increases in Alumina or Silica nor do they seem to show =
consistency of proportionality with respect to the unity of the Fluxes.
Now, it is possible that this has been explained to people who have =
attended the courses which Ian has been holding and that more recent =
knowledge supersedes that in this 1985 publication. So, can someone =
please explain for me the apparent random distribution of the thirty =
five selected points.
Thank you in advance,
Ivor Lewis. Continuing to be inquisitive.
Cheryl L Litman on fri 23 jun 00
Have you looked at his website? The recipes are fixed % changes of
silica and alumina.
http://ian.currie.list.to/index.html
Cheryl Litman ---------- Somerset, NJ --------- email:
cheryllitman@juno.com
On Thu, 22 Jun 2000 17:41:31 +0930 iandol writes:
> At last I have been able to put my hands on a copy of Ian Currie's
> book =
> Stoneware Glazes, A Systematic Approach. It has been a most
> enjoyable =
> read and I can understand the enthusiasm of those who have attended
> =
> workshops with Ian for his methodology. I can see the logic which he
> =
> introduces and think that isolating the fluxing oxides, keeping
> their =
> content constant and altering the ratios of alumina and silica gives
> a =
> good graphic representation which is easier to understand than if
> they =
> were plotted on a triangle.
> However, there is one thing which I cannot understand. I realise how
> the =
> parallelograms form, representing the location maximum and minimum =
> quantities of silica and alumina which would be appropriate for
> chosen =
> mixtures of molecular flux combinations. What I cannot find in the
> text =
> is how the dots which represent actual recipes are determined. Ian
> gives =
> thirty five alternative mixtures to make up a test tile. These are
> not =
> spaced at regular intervals on the plot. They do not seem to
> represent =
> uniform increases in Alumina or Silica nor do they seem to show =
> consistency of proportionality with respect to the unity of the
> Fluxes.
> Now, it is possible that this has been explained to people who have
> =
> attended the courses which Ian has been holding and that more recent
> =
> knowledge supersedes that in this 1985 publication. So, can someone
> =
> please explain for me the apparent random distribution of the thirty
> =
> five selected points.
> Thank you in advance,
> Ivor Lewis. Continuing to be inquisitive.
>
>
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Cheryl Litman ---------- Somerset, NJ --------- email:
cheryllitman@juno.com
Stanley Irvin on fri 23 jun 00
Can anyone tell me where to get Ian Currie's boon on Stoneware
Glazes? I woul appreciate any assistance.
Stan Irvin
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