I just glazed fired a very nice lidded casserole pot. Love the shape, love the glaze, lid fits nicely.... but a small hairline crack on unglazed underside of the lid. Tried to grind it out.... the hairline crack is now a nice little round divot. about 1/8" wide and 1/8" deep. Too deep to grind smooth. I can not think of any material that I could fill in the divot that would be food safe. Any Ideas? Unfortunately I am sure the best answer is to just make a new lid. But just thought I would throw it out there.