Hopefully there are some ceramic gurus on here. I have bought a premixed stoneware glaze powder. It has directions to add 1 L of water and 0.5 L of pehatine (so 1.5 L water) to 1 kg of glaze powder (so 2.5 kg total). This would result in a specific gravity of approximately 1.67 (2.5 kg / 1.5 L).
I don't want to brush the glaze but pour and dip it, so I don't need the pehatine for that. I read that a specific gravity of 1.8 was pretty much the highest possible without using deflocculation.
I started mixing the powder with water only. I didn't power mix it, but just stirred it vigorously with a spork. I used 0.25 kg powder and 0.3 L water (specific gravity 1.83), so as not to have it too runny/watery. But already the viscosity is waay to watery (essentially runs like water).
I tried adding some vinegar to gel it, but not much happened, except after some time a part of the powder settles out of the slurry/solution.
What is wrong, how can my glaze have such low viscosity at such high specific gravity?
Am I calculating specific gravity correctly?
What is in pehatine exactly and what does it do?
Why doesn't the vinegar gel / slurry / fix the glaze?