How do you make spongy lead?

To make spongy lead, you typically start by melting lead in a furnace until it reaches a liquid state. Next, you introduce a reducing agent, such as carbon or aluminum, to the molten lead, which helps to create a porous structure as the lead solidifies. The mixture is then cooled, allowing it to form a spongy texture. Finally, the spongy lead can be further processed or refined as needed for its intended use.