A method of manufacturing a three-dimensional object via additive manufacturing, AM, the method comprising: dispensing a first building material formulation to form an outer region , and dispensing a second building material formulation to form an inner region the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, wherein the first and the second building material formulations and the first curing condition are selected such that upon the exposing, the first building material formulation is hardened to a higher degree than the second building formulation; repeating the dispensing and the exposing to the first curing condition to sequentially form a plurality of layers of the object, wherein the outer regions form a hardened coating that at least partially encapsulates the inner regions; and collectively exposing the plurality of layers to a second curing condition, wherein the second curing condition is other than the first curing condition and wherein the second curing condition is selected to increase the degree that the inner region is hardened; wherein the first building material formulation comprises a first curable material and an initiator for promoting hardening of the first curable material, and wherein the initiator is active towards promoting the hardening upon exposure to the first curing condition, wherein the first and the second building material formulations and the first curing condition are selected such that upon said exposing to the first curing condition, a hardening degree of said first building material formulation is at least 70 % and a hardening degree of said second building material formulation is no more than 50 %. dispensing a first building material formulation to form an outer region , and dispensing a second building material formulation to form an inner region the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, wherein the first and the second building material formulations and the first curing condition are selected such that upon the exposing, the first building material formulation is hardened to a higher degree than the second building formulation; repeating the dispensing and the exposing to the first curing condition to sequentially form a plurality of layers of the object, wherein the outer regions form a hardened coating that at least partially encapsulates the inner regions; and collectively exposing the plurality of layers to a second curing condition, wherein the second curing condition is other than the first curing condition and wherein the second curing condition is selected to increase the degree that the inner region is hardened; wherein the first building material formulation comprises a first curable material and an initiator for promoting hardening of the first curable material, and wherein the initiator is active towards promoting the hardening upon exposure to the first curing condition, wherein the first and the second building material formulations and the first curing condition are selected such that upon said exposing to the first curing condition, a hardening degree of said first building material formulation is at least 70 % and a hardening degree of said second building material formulation is no more than 50 %. <EOS>