Abstract: A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises: extruding from a tip of an extruder contours of a modeling material to form on a supporting platform a plurality of layers corresponding to slice data of the object; and establishing a vertical relative movement between the tip and the supporting platform while the material is extruded.

Abstract: A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises: extruding contours of a modeling material to form a plurality of layers corresponding to slice data of the object; wherein at least one of the contours is extruded generally horizontally above a three-dimensional region which is devoid of any solid support.

Abstract: The present invention relates to a waste receptacle. More particularly, the invention is concerned with providing a waste receptacle wherein a fresh plastic garbage bag appears therein automatically upon the removal for disposal of a full bag by providing waste receptacle including a hollow container having a length and a width and featuring a substantially elongated aperture, having an outer edge, formed in a lower surface of the container. The aperture also communicating with a cavity in the hollow container, as well as the cavity having an entry facing vertically. The device further includes a base unit situated beneath the container and having a recess formed in the base unit for situating a plurality of interconnected bags.