I always did like experimenting with self glazing clay bodies when I was in college. really any clay body can become self glazing ... it really just comes down to finding that point of fluxing a clay body to where it still holds it shape with in a cone or two higher than you fire but the surface flux melts at the cone you fire to or a little under. I had one I called a volcanic clay which I used silicon carbide in with high flux on an iron-ish rich clay body ... it fired to cone 10 and would sort of form a bubbled skin looking like course rock for some of my sculptures. Mind you, it still had warping and distortion in thin areas because of the self fluxing, so that had to be overcome with thickness.
- AnnaM likes this