Various posts on pottery, glazes and miscellaneous life adventures.
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Snowflake Crackle
Here is a picture of a Snow Flake Crackle tea bowl. Found it during a class at MISSA when a student (I think it was Nan Goodship) ran a progression test. It is reproducible!
About 3 years ago I found a crackle glaze like this - it was called Cracked Ice and had more of a geometric pattern - squares upon squares, it was amazing. It did have to be applied thickly and responded well to very small amounts of cobalt carb and copper carb. Have lost the recipe and would love to reconnect with a similar glaze. Nice Job!!
Another thing that affects this type of glaze a lot is the COE of the clay body! So that means try various clay bodies, coarse - fine and try various temperatures.
Doesn't that glaze have 90 something percent spar? I'd love to see a test with about 1-2% copper carb.
ReplyDeleteThere's a glaze we have at school and in the 'High Fire' book called ice trap that does crazing like this this when applied thick. Beautiful
ReplyDeleteI'm assuming some sort of recipe will be forthcoming, right?
ReplyDeleteJune, I agree about the copper test.
About 3 years ago I found a crackle glaze like this - it was called Cracked Ice and had more of a geometric pattern - squares upon squares, it was amazing. It did have to be applied thickly and responded well to very small amounts of cobalt carb and copper carb. Have lost the recipe and would love to reconnect with a similar glaze. Nice Job!!
ReplyDeleteIce Trap cone 10
ReplyDelete33.3 Custer Feldspar
33.3 G-200 Feldspar
14.3 Whiting
14.3 Silica
4.8 Soda Ash
0.5 Red iron
Thanks June!
ReplyDeleteAnother thing that affects this type of glaze a lot is the COE of the clay body! So that means try various clay bodies, coarse - fine and try various temperatures.