Alisa Liskin Clausen on tue 9 may 06
Glaze test for Mat Black, cone 6, ox. Jayne Shatz CM article
Source: CM September 2005
Credited to:
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:
18.4 Barium Carb.
8 Gerstley Borate
36.8 Custer Spar
18.4 Barnard Clay subbed local red clay
9.2 EPK Kaolin
9.2 Silica
ADD
2.4 Cobalt Oxide
3.4 Copper Oxide
2.3 RIO
9.2 Zinc Oxide
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, oversaturated, possibly underfired, black glaze, some pinholing
Regards from Alisa in Denmark
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