Abstract: An example of a self-cleaning apparatus for a 3D system is disclosed. The apparatus comprises a surface on which build material accumulates during a 3D printing operation. The surface has a profile that slopes generally down towards a collection point. The apparatus also comprises the collection point located in the surface to drain build material from the surface. The apparatus further comprises a vibrating source to cause the surface to vibrate. The apparatus also comprises a controller to control the vibrating source to vibrate, upon determining that a cleaning operation is to be performed, to drive build material accumulated on the surface towards the collection point.

Abstract: A system for separating and transferring phases of a fluid through centrifugation including a centrifuge having a rotating axis, a platform that is rotatable around the rotating axis; and a device for separating and transferring the phases of the fluid. The device includes a separating container and a receiving container connected to the separating container through a connecting channel. A passive valve system is provided in the connecting channel. The device is mounted in the centrifuge platform such that in use at a first predefined range of centrifugal force a fluid provided within the separating container is separated into phases and at a second predefined range of centrifugal force the valve system opens, thereby transferring a phase of the fluid from the separating container to the receiving container.

Abstract: A system for separating and transferring phases of a fluid through centrifugation including a centrifuge having a rotating axis, a platform that is rotatable around the rotating axis; and a device for separating and transferring the phases of the fluid. The device includes a separating container and a receiving container connected to the separating container through a connecting channel. A passive valve system is provided in the connecting channel. The device is mounted in the centrifuge platform such that in use at a first predefined range of centrifugal force a fluid provided within the separating container is separated into phases and at a second predefined range of centrifugal force the valve system opens, thereby transferring a phase of the fluid from the separating container to the receiving container.