Lisa E on wed 13 dec 06
Hello All;
I just opened the kiln this am to check on the test glaze pieces. This is
my first go at making my own glazes. I was nervous but I knew not to expect
exactly what the pictures showed me in the book. I am using the AM1 Base
Glaze out of Micheal Bailey's "Glazes Cone 6" book. Page 39 - 41 because
the colors really drew me to them. This is definitely a matt glaze. I was
pleased with the results and was even shocked at how closely they turned out
to the pictures. Maybe a little darker or lighter but that can be easily
tweaked.
Base Glaze - AM1
Soda Feldspar 54
China Clay 28
Whiting 8
Dolomite 6
Zinc Oxide 4
Because it is a matt glaze, I know that the interior of my pottery will need
something shinier for cleaning otherwise coffee and tea stains will quickly
coat my mug interiors and any food items will stick and the functional ware
will be hard to clean. I thought this may be the case when I chose this
matt glaze but I have also made a nice shiny clear glaze:
Cornwall Stone 50
Gerstley Borate 40
Silica 10
I loved how the colors turned out but I am thinking they are better for
sculptor versus functional ware. So I was thinking that I would keep the
colors I like and then dip each entire piece in the Cornwall Clear before
firing (first dip in the matt glaze, second dip in the clear glaze).
Is that silly? Should I be focusing on making the glazes less matt instead
of dipping each piece first in the colors I like and then dipping each piece
in the clear? If I change the base, could I lose the colors I really
like?
Any feedback would be greatly appreciated as this is my first attempt at
making my own glazes and I really like the outcome of the colors. I
agonized over which colors to choose for weeks before making them. I made
eight 200g test batches. I am in love with 4 of them. 4 was what I wanted
to end up with along with a clear.
What do you think?
Lisa
--
Lisa E
Sunny Daze Design Pottery Studio
Squamish, BC
Paul Lewing on wed 13 dec 06
On Dec 13, 2006, at 4:20 PM, Lisa E wrote:
I loved how the colors turned out but I am thinking they are better for
sculptor versus functional ware. So I was thinking that I would keep
the
colors I like and then dip each entire piece in the Cornwall Clear
before
firing (first dip in the matt glaze, second dip in the clear glaze).
Is that silly? Should I be focusing on making the glazes less matt
instead
of dipping each piece first in the colors I like and then dipping
each piece
in the clear? If I change the base, could I lose the colors I really
like?
It's not silly, but it probably won't give you what you want.
Usually when you overlap two glazes, especially when the two are as
different as these two, you usually something unlike either one alone.
You can''t make all colors in any one base glaze. The presence of
zinc in your first glaze, especially, will change some colors. And
all the boron and sodium in the second glaze will contribute to
bright colors. But you should be able to make that matte glaze a
little less matte and not lose the colors you like.
Paul Lewing
www.paullewingtile.com
Snail Scott on thu 14 dec 06
At 04:20 PM 12/13/2006 -0800, Lisa E wrote:
>Because it is a matt glaze, I know that the interior of my pottery will need
>something shinier...So I was thinking that I would keep the
>colors I like and then dip each entire piece in the Cornwall Clear before
>firing...
The matteness of a glaze is part of what
makes its color. To coat it with a clear
gloss glaze will not be like lacquering
it. Doing so will usually change the color,
sometimes a lot! Streakiness can often
result, too, which can be good or bad
depending on your intent.
Go ahead and test it. You may like the
results for their own sake, but they are
unlikely to be just a shiny version of
the matte color.
-Snail
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