Method and system for additive manufacturing of peelable sacrificial structure

A method of additive manufacturing of a three-dimensional object comprising:

• sequentially dispensing and solidifying a plurality of layers, wherein the plurality of layers is formed with (i) a plurality of different colored model materials arranged in a configured pattern corresponding to a shape and a color definition of the object, (ii) a flexible material arranged in a configured pattern to form a sacrificial structure at least partially encompassing the object, and (iii) a soft material arranged in a configured pattern to provide an intermediate structure between the model material and the sacrificial structure;
• wherein the flexible material is black, wherein the plurality of different color model materials does not include a black model material, and wherein at least one first black portion of the object is formed by digitally mixing the plurality of different colored model materials to create a black color, and at least one second black portion of the object is formed by an amount of said black flexible material.