Alisa og Claus Clausen on mon 25 jun 01
Glaze test for Cast Iron, cone 6 ox.
Source: Clayart
Tested on light, mid-range stoneware, with iron flecks. Fired to 1215c =
(22219) oxidation, at this ramp:
100c to 600c 212f to 1112f
150c to 1100c 300f to 2012f
100c to 1220c 212f to 2228f
soak at 1220c for 30 minutes =20
cool down 100c per hour to 900c (212f/1652f)=20
soak at 900c for one hour
shut off and cool down (aprox. 40 hours)
Recipe:
25 Epk
25 Flint
50 Frit 3134
Add
25 RIO
5.0 Rutile
All measurements measured up or down to the nearest whole decimal.
Substitutions: Frit 623 for 3134
Resulted in a dark brown iron glaze with some bubbling and iron =
crystallization seen typically with iron oversaturation.
Best regards,
Alisa in Denmark
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