SANITARYWARE

PROCESSES

• First Fire: Most Sanitaryware is fired in a single process; so the piece is Cast, Dried, Glazed and Fired just once creating a finished piece. This can be done in a tunnel or shuttle kiln but most large producers use a tunnel kiln as it is more fuel efficient.
• Refire or Second Fire: After the first firing, many producers will repair any slight blemishes that are found in the glaze surface on a small number of the pieces. This involves grinding the surface and repairing it with a second glaze process before Refiring (or Second firing). This is normally done in a shuttle kiln as the numbers are smaller and variable so the shuttle kiln offers more flexibility.