Orion/Baker on thu 30 oct 97
Here's a pretty reliable Blue Celedon for Cone 9-11 gas firings ('makes no
difference whether updraft or downdraft). This glaze is a light, somewhat
dusty blue when used on white clay or porcelains. It's relatively
translucent/transparent with a gloss surface. Run through INSIGHT glaze
calculation software, its values are: cost/kg .27 (cheap?), ratio 9.88,
expansion 6.42, weight 392.23.
Here's the batch recipe as it was originally given to me, in grams
(percentages follow in parentheses)
BLUE CELEDON - Cone 9-11
Flint (silica) 3502 (38.32)
Whiting 1600 (17.51)
Custer (potash) feldspar 2224 (24.34)
EPK (kaolin) 1630 (17.84)
Red Iron Oxide 162 (1.77)
Cobalt Carbonate 20 (0.22)
Application: I suggest a "medium" thickness application. It's a good
"dipping" glaze (I've never applied it using a brush, other than on test
tiles -- to no ill effect).
Enjoy!
Ellen Baker
orion@telcomplus.com
360-599-2544
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