John Post on wed 2 jul 97
Hi Jennifer,
Here is what I have for New Rogers Black Raku Glaze...
20 Potash Spar
80 Gerstley Borate
10 Red Iron Oxide
10 Cobalt Carbonate
10 Black Copper Oxide
Another nice black raku glaze is Chris Thompson's Black...
30 Frit 3110
20 Nepheline Syenite
50 Gerstley Borate
4.5 Manganese Dioxide*
4.0 Cobalt Oxide
4.5 Copper Oxide
3.5 Iron Oxide
* I omit the Manganese Dioxide and the glaze is still a
nice black.
John Post
rp1mrvl@moa.net
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