The large constructor is a placeable in Empyrion. It can be crafted at a Small Constructor and is useful for making more advanced items, such as ship thrusters and weapons.
The large constructor drains far more energy than most other devices; be sure to shut it off before you leave, or else your Automatic Doors might not be so automatic when you come back.
In order to use a large constructor it needs to be placed on a base with a core, a generator, and a fuel tank with some fuel in it.
Unlike the Advanced Large Constructor, a large constructor will not automatically build or refine materials needed to build a requested item, the player must build these manually.
You can also use it to make decorations.