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Some more Crater glaze test results

I've been blathering on about Crater and Lava Glaze recipes here and on Facebook too. I suddenly "got the bug" as well as a commission- (more on this later) so hence the rather manic activity testing out glazes and destroying kiln shelves in the process with runny, bubbling glazes.

I tested 2 recipes- after first trying the usual recipes from the internet and in various books. As I suspected - few of them gave satisfactory results- either it was "pilot error" or the glaze authors just happen to neglect to tell you that vital missing  ingredient, kiln temperature or soak time etc! (Know the type of thing?)

Anyway I resorted to testing 2 standard glaze recipes which I've had for years. A turquoise matte and a Lucy Rie white stoneware. The jury is still out on the turquoise variant- but the white is rather nice. A little suggestion from Potter Jan Lewin Cadogan http://www.janlewin-cadogancontemporaryceramics.co.uk/
put me right by suggesting to mix the glaze slightly thinner, to fire at a lower temperature, and to add less silicon carbide. I took her advice and - glad to say thankyou- it worked.! ( By the way do check out Jan's work with lava glazes- they are quite sublime)

I am sure I will post more photos of these white lava glazed stoneware bowls- 1 of which I can confirm has found a new home in Australia. That makes it my longest travelled pot so far- Australia trumps Japan I think? Well if it's not there yet- it will arrive in Sydney soon...








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