Alisa Liskin Clausen on sun 22 oct 06
Glaze test for WoDo White and Cobalt Retesting for Lili's
discussion about Dolomite glazes
Source:
Credited to: Alisa Clausen, revision of a glaze given by Toni Martens, RSA
Fired on mid fire white stoneware
Firing ramp with an electric controller is:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 900c (1652f)
Hold 1 hour
Shut off kiln
Recipe:
49 Nepheline Syenite
25 Dolomite
6 Wollastonite
20 Ball Clay
------------------------
100 gram
Note: All raw materials are measured up or down to the nearest half
decimal. Colorants or additives to a 100 gram batch are measured in percent
to the 100 gram batch.
Results:
Mat, white, opaque glaze, smooth surface. Iron comes through glaze.
ADD
1 Cobalt Carb.
Pale lilac
1 Cobalt Carb.
1 Tin Oxide
Deeper lilac
Regards from Alisa in Denmark
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