Techniques for depowdering additively fabricated parts via gas flow and related systems and methods

An apparatus for extracting one or more additively fabricated parts from a powder bed comprising a powder and the one or more additively fabricated parts, the apparatus comprising:

• a chamber configured to receive a build box containing the powder bed and configured to form a hermetic seal around at least part of the build box such that a surface of the powder bed may be exposed within the chamber, the chamber comprising:
• one or more nozzles each configured to direct a jet of gas onto the surface of the powder bed;
• one or more inlets;
• one or more outlets;
• and
• at least one pressure source coupled to the one or more inlets and/or to the one or more outlets and configured to create a pressure differential between the one or more inlets and the one or more outlets.