2.1 Introduce the crucible w/ charge into the muffle furnace, which is pre-heated at 1000 0c (fusion temperature)2.2 After melting the charge (fusion tames about 45 min.) remove the crucible from the muffle furnace, PMR the molten charge to the pouring mold and allow it to cool to room temperature.2.3 When the melt solidifies, remove the lead button from the slag by hammering and form it into a cube.2.4 Insert two (2) inquartz to the lead button (PB) by hammering.