We do not recommend not using old ware unless it shows signs of deterioration such as cracking or pitting of the glaze. This could be a sign that the glaze is disintegrating and could allow lead to leach into food.
Is crazing on china dangerous?
They will turn black or brown sitting between the crazed lines or on the porcelain body itself. Nearly inaccessible, bacteria enjoy this environment. You must recognize that regardless of the method you use to clean crazed china, it is no longer food safe.
Is fine china toxic?
It is unfortunate that just about everything around us can be toxic including our dinnerware! Dishes made with ceramic, porcelain or china can contain lead or cadmium since glaze is used. Whether the dish is plain white or with colorful decorations, lead or cadmium can be present.
What is china crazing?
Crazing translates to fine cracks in the glaze or surface layer of porcelain wares. It can also occur in pottery, some plastics, and composition materials (such as the face of a composition doll that has not been properly stored).
Can you get rid of crazing?
Crazing can often be eliminated simply by applying a thinner glaze coat. With some glazes, a thinner coat is not an option, but often a slight decrease in glaze thickness will stop crazing.