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glaze test for jeff zamek clear, cone 6 ox.

updated wed 10 apr 02


Alisa og Claus Clausen on tue 9 apr 02

Glaze test for: Jeff Zamek Clear, cone 6 ox.

Credited to: Jeff Zamek

All tests fired on white, iron flecked, mid-range stoneware.
Fired to cone 6 (1220c) in oxidation.

Firing ramp: Skutt 1227
100c (212f) per hour to 600c (1112f)
150c (302f) per hour to 1100c (2012f)
80c per hour to 1220c (2228f)
15 minute soak.
cool down to 1020c
80c per hour down to 800c.
Shut off kiln. (approximately 14 hours)

20 Nepheline Syenite
20 Whiting
20 Kaolin
20 Flint
20 Frit 3124

All raw materials measured up or down to nearest whole decimal.
Oxides used on percent basis to a 100 gram batch of glaze.


Resulted in:
Clear gloss base glaze that crazed at base of test tile.

Regards from Alisa in Denmark