Chic Lotz & Keith Montgomery on tue 26 apr 05
There=B9s been lots of talk
=8Cbout calculating glaze
But let=B9s not forget
all the historical ways.
Some dig =8Cem and use =8Cem
with barely a word
of oxides and formulas
Is that just for nerds?
Mainly silica plus alumina
and add in some flux
To get the right ratio
is really the crux.
Look at the glaze,=20
Did it get enough heat?
balancing acids with alkalines
can make a glaze sweet.
With feldspars and kaolins,
whiting and such
its always a question
of just how much?
Trial and error, intuition,
observation and more
Are the tools that they used
Its not just old lore.
Some use triaxials and
quadraxial blends
With all of this testing
There can be no end.
Know your materials
what will they do?
Let's make a glaze
with just a few!
Some have their theories
and some stick to facts
and some won=B9t let you
look over their backs.
Some have experience
while others have none
=B3Find them in books is
just how its done!=B2
From Hamada & Yanagi
Leach & Cardew
Parmalee, Rhodes & Hammer
and now onto you.
Use pencil and paper
and you do the math,
or is using the software
more like your path?
With Hopper & Hansen
Obstler, Bailey, and more
John, Ron, and Pete
its never a bore.=20
Using all of these tools
its easy to see
chemistry challenged potters
can learn glaze chemistry!
Have fun learning!
Chic Lotz
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