Patent ID: 8734694

Claim:
A method comprising: supplying building material to a device for manufacturing a three-dimensional object by a layer-wise solidification of the building material at positions in respective layers that correspond to the object, wherein the device comprises: a machine frame; a building space provided in the machine frame; a feed that supplies building material to the building space; at least first and second filler pipes provided at the feed, the filler pipes being independent from one another; and a connector for a building material supply container that supplies building material from outside of the device, the connector provided at each of the filler pipes; and exchanging the building material supply container connected to the first filler pipe while the building material is supplied to the device from the building material supply container connected to the second filler pipe and while a building process is on-going in the device, wherein operation of the device is not interrupted when the connector is detached from the building material supply container.