First, an epoxy compound model of the designs is created. The caster uses these to make sand molds. Metal rings hold the pressed sand that forms the top and bottom parts of the mold. Then, recycled metals such as household utensils and old pipes are then melted into pourable metal inside a coal-fuelled furnace. This melted metal is then hand poured into stacked molds. After they are cooled, the sand is broken to reveal the objects. Raw unfinished cast pieces fresh out of the sand molds. These are then hand filed and polished to complete the process.