glazing some of the ceramic work that has come out of the first firing

Here Debbie is glazing some of the ceramic work that has come out of the first firing. It has been fired in a kiln to 1000 degrees centigrade. very hot! Now Debbie has to put the glaze one by one onto everything that the children made. Being careful not to put the glaze underneath the artwork, she puts one coat on, lets it dry and then puts on a second coat of glaze. Sometimes a third coat. Why does it look white? The glaze is actually a bit like powdered glass. It is powders mixed up with water. The ingredients are things like, clay, silica, frit. The artwork goes into the kiln and it heats up and the powders turn to glass! This time the artwork will be heated to 1060 degrees.