Hi, I have a related question. I'm an amateur and recently made some glazes using Barium Carbonate and used it to glaze some bowls, however I've since learned that it isn't safe to use for dinnerware items. I'll be steering clear of it in future but is there any way to rescue the pieces that I have glazed in it. Could I glaze them again with a dinnerware safe clear glaze?
Also there are mentions above of the dangers of Manganese, is this only when glazing or is it also unsafe to use in glazes intended for food vessels?
Thanks in advance