Abstract: Devices for additive manufacturing of a three-dimensional object from powdered material include a main body providing an object forming chamber and, within a front wall, an opening for accessing the object forming chamber. A work surface delimits the object forming chamber and includes a build platform section for manufacturing thereon the three-dimensional object. A door is provided at the front wall and positionable in a closed state to seal the opening or in an opened state to provide access to the object forming chamber. The devices include a gas flow system for providing a gas flow across the build platform section and including a main body section extending within the main body and a door section being part of the door and including an opening structure arranged to release gas to, or to receive gas from, above the build platform section in the closed state of the door.

Abstract: Devices for additive manufacturing of a three-dimensional object from powdered material include a main body providing an object forming chamber and, within a front wall, an opening for accessing the object forming chamber. A work surface delimits the object forming chamber and includes a build platform section for manufacturing thereon the three-dimensional object. A door is provided at the front wall and positionable in a closed state to seal the opening or in an opened state to provide access to the object forming chamber. The devices include a gas flow system for providing a gas flow across the build platform section and including a main body section extending within the main body and a door section being part of the door and including an opening structure arranged to release gas to, or to receive gas from, above the build platform section in the closed state of the door.