Manganese and Nickel colors at cone 10
firing to cone 10 in oxidation
slow downfire at 50 deg F an hour in the interval 1850 deg F to 1700 deg F
slow downfire at 25 deg F an hour in the interval 1700 deg F to 1650 deg F
One hour hold at 1650 deg F
glaze cooper_404_1Mn + 2.5 % manganese dioxide bowl ~ 3 inch diameter
glaze cooper_404_2 + 1.5 % nickel oxide bowl ~ 3 inch diameter
glaze cooper_411_2 + 2.5 % Manganese dioxide bowl ~ 3 inch diameter
glaze mn_mica_Z6_0 + 2.5 % manganese dioxide bowl ~4 inch diameter