Here there is five available lead in the forge. As lead is smelted from the input slots, the available lead in the forge will increase.
Lead is a material used by the Forge for crafting items from forge recipes.
Once a source of lead such as Scrap Lead has been smelted in the forge, it becomes available as lead. The lead for a recipe must already be smelted in the forge before you can craft the recipe.
For a complete understanding on how to smelt lead and other materials, see Smelting.
The following recipes require Lead (Forge): (NOTE: Times are based on a level one skill and the material that an object is crafted from, which is only reliable for food at the moment, so is rather difficult to calculate, this table is auto-generated):