he second test bowl I fired on Tuesday yielded some nice results. The glaze base with varying amounts of iron added looks good, especially the 7-10% range. I think we will do a tenmoku glaze for the bouja with a shingle ash base and maybe the iron that Dom made from the metal remnants of the barn. However, the ash plus clay recipes that I tried again, this time with ‘green hole’ and ‘black hole’ clay from the farm, still are bubbly. I think it is due to the presence of alkali in the ash.
Another round of glaze tests
he second test bowl I fired on Tuesday yielded some nice results. The glaze base with varying amounts of iron added looks good, especially the 7-10% range. I think we will do a tenmoku glaze for the bouja with a shingle ash base and maybe the iron that Dom made from the metal remnants…
2 responses to “Another round of glaze tests”
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That bright blue glaze is stunning!
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Maybe the bubbling is from the clay? Is there bubbling in glazes with no farm clay? I was using Gillespie Borate as a flux for the Nuka and I got tons of bubbling. I did more reading on digitalfire.com and it said Boron fluxes are volatile over cone 6. Once I switched to Calcium fluxes (whiting, bone ash) bubbling went away, even though I keep ALL alkali in the ash…and I like glazes 3-5!!
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