Sandy Miller on tue 27 may 03
Results from peacock blue tests suggested by Karen Gringus posted =
several months ago. Interesting result and I learned alot, thanx Karen!
Peacock Blue 1 Peacock =
Blue II
Frit 3195 40.0% Frit 3289 =
20.0%
Ball Clay OM 4 15.0% Neph. Syenite =
20.0%
Silica 20.0% Lithium =
Carb. 2.0%
Whiting 15.0% Ball Clay =
OM4 15.0%
Zinc Oxide 8.0% Silica =
20.0%
Titanium Diox. 2.0% Whiting =
15.0%
Cobalt Oxide .75% Zinc Oxide =
8.0%
Blk. Copper Ox. 1.0% Titanium =
Dioxide 2.0%
=
Chrome Oxide .10%
=
Cobalt Carb. .25%
Both tests were tested in a Cress Kiln with a kilnsitter using a ^6 =
pyrometric bar, and in a Cress kiln with computer set to ^5 with a 10 =
minute soak at the highest temperture. Normal cool down, no fire down.
Peacock Blue I resulted in a glossy transparent dark blue, almost navy. =
Appears to be very stable, stayed where put with no running. Broke on =
texture and edges of tile. Tested on Standard Clay 182. No variation in =
color and might add 2-4% lithium carb. to see if I can get some =
variation in the depth of the glaze.
Peacock Blue II resulted in a glossy transparent greenish glaze. =
Appears to be very stable. Lots of depth to this glaze and appears to =
have tiny little micro crystals on the very edges of the glaze. Green =
streaks running through it and breaks nicely on the edges and textured =
areas. Tested on Standard Clay body 182. I will probably use this =
glaze.
I ran over 12 tests this weekend and the Peacock Blue II in one of the =
best. =20
Happy testing!!
Sandy Miller
www.thesiameseconnection.com/sandymiller
PS: does anyone know of a frit substitute for Ferro 3247. I have been =
testing from an old 50# bag and getting beautiful results but they no =
longer make this frit. thanx for any help with this.
Alisa Clausen on wed 28 may 03
Dear Sandy,
This is one of the glazes I used in a big batch when I first began using
mixed glazes. It came to me from Barbara Lund, a Danish American who used
to be on the list, maybe still is? I had big swings in color depending on
application. Blue, green, brown and then suddenly just sort of mucky brown
with faded traces of other color. I tested it again with Wollastonite
instead of Whiting and it looks very freshened up again. It is on the glaze
test page of my site www.alisa-potshop.dk. Maybe try that and see how it
goes for you.
I like the glazes semi matteness and unfortunately the Wollastonite makes it
pretty glossy, but in any case, I am not using big batches of it right now.
It does look very good under clear glosses, as it can get very opalescent.
I like the contrast of the matte with the gloss of the opalescence. With
the Wollastonite, it was itself opalescent.
regards from Alisa in Denmark
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