Method for managing a powder in an additive manufacturing facility comprising a plurality of machines

A facility for additive manufacturing facility, the facility comprising:

• a storage container for storing a volume of feedstock powder;
• a plurality of additive manufacturing machines, each of the machines being structured to perform a layering operation using powder and to move away excess powder from the layering operation;
• a feeder arranged to automatically feed the machines with powder from the volume of feedstock powder, the powder being used by the machines for the layering operations;
• a collection circuit structured to collect, from each of the machines, the excess powder from the layering operations, and to transport the excess powder to the volume of feedstock;
• and
• a cleaner arranged to clean rough components produced by the machines in order to enable recovered powder to be obtained from the rough components, the cleaner being connected to the collection circuit so that the recovered powder can be introduced into the collection circuit.