Additive manufacturing device and system for manufacturing a sacrificial mould for creating an object

An additive manufacturing device for manufacturing a mould, wherein the additive manufacturing device comprises

• a container for providing at least one mould material,
• a build platform having a build surface to hold and/or support at least one mould being or having been manufactured by an additive manufacturing process,
• a source for providing energy to selectively activate the at least one mould material in or from the container to enable additive manufacturing of the mould, and
• an electronic controller adapted to selectively control the source to manufacture the mould as a one-piece sacrificial mould according to a predetermined design producing a one-piece sacrificial additively manufactured mould comprising
• one or more outer shells circumscribing and enclosing a first inner volume,
• at least one inlet being connected to the first inner volume and being adapted to receive at least one building material,
• at least one outlet being connected to the first inner volume and being adapted to release air from the first inner volume when the first inner volume receives the at least one building material via the at least one inlet, and
• one or more securing elements extending away from and/or into the build platform and configured to be mechanically connected with and released from a transportation mechanism to move the build platform into and/or out from the additive manufacturing device by the transportation mechanism that is external to the build platform,
• the build platform and/or the one or more securing elements further comprising a number of guiding elements and/or a number of guiding cavities facilitating proper placement of the build platform in the external transportation mechanism, and
• wherein the at least one mould material is composed of one or more predetermined dissolvable materials whereby a one-piece sacrificial additively manufactured mould manufactured from the at least one mould material is dissolved.