I have a very large pedestal bathroom sink that has some micro cracks in the glazing. The cracks are around the drain plug. I think this damage occurred before I purchased the home by the owner tightening the joint too tight. It is an expensive sink and I hate the idea of putting it in the trash, but it is getting impossible to keep those cracks free of dirt.
If I can find a local place that has a big enough kiln, can the sink basin be fired again to repair the cracks, or another layer of glaze applied, then fired?