Alisa og Claus Clausen on fri 12 oct 01
>Date: Wed, 10 Oct 2001 10:10:16 +0200
>To: Ceramic Arts Discussion List
>From: Alisa og Claus Clausen
>Subject: Glaze test for Orange Glaze, cone 6 ox.
>
>
>Glaze test for: Orange Glaze, cone 6 ox.
>Source: Mike Bailey's book
>
>
>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.
>
>Recipe:
>46.7 Potash
>4 Kaolin
>2 Bentonite
>15 Bone ash
>4 LIthium Carb.
>16.9 Talc
>11.4 Silica
>
>ADD
>10 RIO
>
>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:
>Feldshammer feldspar for potash.
>
>Resulted in:
>Gloss surface glaze that covered well. No discernable difference where
>dipped twice. It is a rich, medium brown with very vivid orange streaking
>throughout. Surface is fluid but not runny. The oranges are very bright.
>
>Variation: added 10 Ochre
>Same base color, but no orange streaking. Instead the glaze has a creamy
>yellow cast where thickest.
>
>Best regards, Alisa
>in Denmark
Glaze test for:
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.
Recipe:
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:
Best regards, Alisa
in Denmark
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