A printing apparatus is for printing a three-dimensional object. The apparatus includes a frame configured to rotate about an axis; an operative surface mounted to the frame; a powder dispenser mounted to the frame, the powder dispenser being configured to deposit at least one powder layer onto the operative surface; and an energy source mounted to the frame for emitting at least one energy beam onto the powder layer. Rotational movement of the frame causes the operative surface to exert a centripetal force on the powder layer for securing the powder layer on the operative surface.