Metal is a type of building material. It can often be found in storage areas, together with piles of glass, reinforced glass and wire. It has many purposes, including building furniture, walls and floors.
To build things out of metal, click on the metal when it is in your hand. This will bring up a menu from which you can select the option you want. If creating a wall or a floor, you must be standing where you want the construction to be.
Many metal object can be removed using a welding torch.