I mixed up a small test batch of Jessica's Chun Blue. Came out a really pretty, transparent blue on my first round of tests. However I'm having a *lot* of problems keeping the ingredients suspended. Seconds after I mix, all the solids drop out and if I let it sit for more than a minute I get panning at the bottom. The quickness of the solids dropping out makes it nearly impossible to get a good coating of glaze, either brushed or dipped. I'm sure spraying would be the same. The copper carbonate lodges on the bottom and is very resistant to stirring.
I tried adding about 2% Bentonite and am about to run some more test tiles but I don't have much hope - all the copper carb is still dropping out immediately after mixing.
My conclusion is that there is no way to use this recipe as-is.
My question is what else can I put in the glaze to make it a bit more friendly and if anyone knows what Jessica adds.