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glaze test for m. barringer glassy slip, cone 6, ox.

updated tue 26 jun 01

 

Alisa og Claus Clausen on mon 25 jun 01


Glaze test for M. Barringer Glassy Slip, cone 6, ox.

Source: Ceramics Monthly, April, 2001.

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:

5 Gerstely Borate
80 Lithium Carb. HAZARDOUS, USE PRECAUTIONS.
15 Bentonite


All measurements measured up or down to the nearest whole decimal.
Substitutions:None

Resulted in a glassy white slip, white semi mat where thinner, greenish =
brown and glassy where thick.

Best regards,
Alisa in Denmark