Alisa Clausen on tue 29 apr 03
Glaze test for Iron Red #5, cone 6 oxidation
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c.
Source: Clayart, Greg Lamont
Credited to:
Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1100c (330f - 2012f)=20
100c p/h to 1220c (212f - 2228f)
5 min. soak
cool down 80c per hour to 800c
shut off kiln
Recipe:
15 Frit 3134
7.5 Dolomite
15 Spodumene
15 Kentucky OM4 Ball Clay
3.75 Talc
15 Flint
11.25 Red Iron Ox.
1.50 Bentonite
Note: All raw materials are measured up or down to the nearest whole =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.
Substitutions:
Local Frit for 3134
Common Ball Clay for OM4
Results:
Gloss iron brown glaze with some black speckling in an overall medium =
brown ground. =20
Where thickest, became slightly fluid with a single red speck.
Regards from Alisa in Denmark
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