Brush is a tool consisting of a handle and brush. The brush is usually made from a large number of steel wire, brass, or stainless steel depending on application. It is used to clean the surface of the graphite mold.
When cleaning stainless steel it is advisable to use a stainless steel bristle wire brush. Brass bristle brushes are used on softer surfaces or in potentially flammable environments where non-sparking tools are required.