This is the cadmium chunk recipe, you need to smelt the chunk to make it useful.
Bronze Ingot Recipe
This is the recipe for the alloy, ObsidiSteel
The recipe for Wood's Metal.
Carbon Piece to Ingot
Also found generating in the world
This is the recipe for the Alloy Maker, a very important part of the mod
Wootz Steel Ingot Recipe
This is the Recipe for Electrum
