Alisa og Claus Clausen on wed 10 oct 01
Glaze test for: Revised Peacock Blue, cone 6, ox.
Source: Clayart
All tests fired on white, mid-range stoneware.
Fired in to cone 6 (1220c) in oxidation.
Firing ramp:
100c (212f) per hour to 600c (1112f)
150c (302f) per hour to 1100c (2012f)
100c per hour to 1220c (2228f)
15 - 30 minute soak depending on matts and glosses used.
Revised Recipe:
40 Feldshammer Feldspar
15 Ball Clay
12 Silica
18 Wollastonite
15 Zinc ox.
ADD
10 Titanium co.
1 Cobalt ox.
1 Copper ox.
Original recipe
40 Potash
15 Ball Clay
20 Flint
15 Whiting
15 Zinc ox.
10 Titanium ox.
0.75 Cobalt ox.
1.0 Copper ox.
Note:
All raw materials measured up or down to nearest whole decimal.
Oxides used on percent basis to a 100 gram batch of glaze.
Substitutions:
Resulted in:
Same greenish brown background as original. However, this
version produced pools of light blue instead of the originals deeper
blues. Much more contrast in the greens, blues and browns. On a
slightly textured surface looks very much like it's name. Glaze stayed
where dipped. Glossier surface than original semi matt.
Think this looks good.
Although I like the original glaze recipe for some pots, with it's more
matt surface, I think this glaze will compliment throwing rings and
such. Very lively, colorful, smooth surface.
Best regards, Alisa
in Denmark
Ababi on wed 10 oct 01
Now Alisa try it without the titanium!
Ababi Sharon
Kibbutz Shoval- Israel
officially Glaze addict
sharon@shoval.org.il
http://members4.clubphoto.com/ababi306910/
http://www.milkywayceramics.com/cgallery/asharon.htm
http://www.israelceramics.org/
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