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glaze test for clear base, cone 6. ox, jayne shatz cm article

updated wed 10 may 06


Alisa Liskin Clausen on tue 9 may 06

Glaze test for Clear Base, cone 6, ox., Jayne Shatz CM article

Source: CM Sept. 2005, article on Jayne Shatz.

Credited to:

Fired on mid fire white stoneware.

Firing ramp with an electric controller is:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 900c (1652f)
Hold 1 hour
Shut off kiln


8.7 Barium Carb.

25 Gerstley Borate

8.7 Whiting

38 Custer Spar

19.6 Silica


8.7 Bentonite

Note: All raw materials are measured up or down to the nearest half
decimal. Colorants or additives to a 100 gram batch are measured in percent
to the 100 gram batch.


Gloss, transparent glaze.

Described as a "great liner glaze" in article. I would choose something
else, without Barium and without so much Gerstly Borate. I made this glaze
with a boron frit instead of G. B. and the result looked the same, with a
very good melt. I would suggest also subbing Strontium for the Barium.
That would get rid of the Barium and since there are no color enhancing
issues, (which I have found Strontium not to be as good as catalyst as
Barium) it could be a success. 100 gr. Barium equals 74.8 gr. Strontium
carb. (6.5 gr. Strontium for this recipe).

Regards from Alisa in Denmark