A method for preparing a three-dimensional object, in layers, the three-dimensional object including a body structure and a support structure, the method comprising: receiving two-dimensional image data of a cross section of the three-dimensional object, the image including a body region corresponding to the body structure and a support region corresponding to the support structure, wherein the support region is distinct from the body region; forming a layer on a transparent substrate by selectively depositing, based on the two-dimensional image data of the cross section, a liquid photopolymer body material which covers and encloses the body region of the layer, and a liquid support material that is different from the liquid photopolymer body material which covers and encloses the support region of the layer, wherein a portion of the liquid body material extends on the transparent substrate outside the body region of the layer and a portion of the liquid support material extends on the transparent substrate outside the support region of the layer; and transferring the layer to an elevated fabrication platform to which the three-dimensional object being formed is attached, wherein transferring comprises: bringing the layer deposited on the transparent substrate into contact with a previously-solidified layer attached to the fabrication platform; and selectively solidifying the first liquid photopolymer body material by irradiating the layer with curing radiation through the transparent substrate according to the two-dimensional image data of the cross section related to the body region, wherein the portion of_the liquid body material that extends outside the body region remains uncured. receiving two-dimensional image data of a cross section of the three-dimensional object, the image including a body region corresponding to the body structure and a support region corresponding to the support structure, wherein the support region is distinct from the body region; forming a layer on a transparent substrate by selectively depositing, based on the two-dimensional image data of the cross section, a liquid photopolymer body material which covers and encloses the body region of the layer, and a liquid support material that is different from the liquid photopolymer body material which covers and encloses the support region of the layer, wherein a portion of the liquid body material extends on the transparent substrate outside the body region of the layer and a portion of the liquid support material extends on the transparent substrate outside the support region of the layer; and transferring the layer to an elevated fabrication platform to which the three-dimensional object being formed is attached, wherein transferring comprises: bringing the layer deposited on the transparent substrate into contact with a previously-solidified layer attached to the fabrication platform; and selectively solidifying the first liquid photopolymer body material by irradiating the layer with curing radiation through the transparent substrate according to the two-dimensional image data of the cross section related to the body region, wherein the portion of_the liquid body material that extends outside the body region remains uncured. bringing the layer deposited on the transparent substrate into contact with a previously-solidified layer attached to the fabrication platform; and selectively solidifying the first liquid photopolymer body material by irradiating the layer with curing radiation through the transparent substrate according to the two-dimensional image data of the cross section related to the body region, wherein the portion of_the liquid body material that extends outside the body region remains uncured.