Additive manufacturing using materials that form a weak gel

A method of additive manufacturing of a three-dimensional object, the method comprising sequentially forming a plurality of layers in a configured pattern corresponding to a shape of the object, thereby forming the object,

• wherein the formation of at least a few of said layers comprises:
• dispensing at least two building material formulations, said at least two building material formulations comprise a modeling material formulation which, upon exposure to a curing condition, forms a hardened modeling material, and a support material formulation which, upon exposure to said curing condition, forms a hardened support material,
• wherein said support material formulation comprises:
• at least one monofunctional curable material;
• at least one hydrophilic multifunctional curable material;
• and
• at least one water-miscible non-curable material,
• wherein:
• a total amount of said at least one monofunctional curable material ranges from 1 to 10, % by weight, of the total weight of the formulation;
• a total amount of said at least one hydrophilic multifunctional curable material ranges from 1 to 5, % by weight, of the total weight of the formulation;
• a weight ratio of a total weight of said at least one monofunctional curable material and a total weight of said at least one hydrophilic multifunctional curable material ranges from 1:1 to 10:1;
• and
• a total amount of said non-curable materials is at least 85% by weight of the total weight of the support material formulation.