Alisa og Claus Clausen on mon 21 may 01
Glaze test for Mike Debrue Bronze, cone 6, oxidation.
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)
50 Albany slip
35 Manganese dioxide CAUTION WHEN HANDLING HEALTH HAZARD
15 Copper oxide
10 Alumina Hydrate
All measurements measured up or down to the nearest whole decimal.
Substitutions: Oldenwalder clay for Albany slip.
Resulted in dark bronw to blackiron glaze with crystals typical of iron =
oversaturation. Matt where thinner, chrystalized and pourous looking =
where thickest. Some movement in surface and could run.=20
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