I asked this question inside another sort-of related thread already, then decided it really was a new topic:
I've often heard of adding kyanite to clay bodies to add thermal shock resistance to raku and pit fired pots. Has anyone tried adding kyanite to a clay body when firing cone 10 functional pots? My students and I are getting ready for a cone 10+ wood-firing in the fall. Some extra thermal shock properties would be helpful, especially for those who want to make thinner-walled pots.
I've seen cone 6 and cone 10 clay bodies that contain kyanite "for strength" however they all seem to have fairly high absorption rates, higher than I would want to use for food ware.
If anyone has any experience with this, or if you have information about how much kyanite be used (even if the answer is "none"), please share!