I'd been wondering about a variant of Chris's idea. Fire fully-cut and unglazed to cone 6
with the pot resting on its rim. Looking at the first picture most of the slumping seems to
be happening near the rim. (At the least you are reducing the spiral by its thickest 1800.)
Then low-fire glaze. BTW glazing a vitrified pot can present problems, unless you are
using a "painting" glaze full of gums.
- Chris Campbell likes this