APPARATUSES, METHODS AND SYSTEMS FOR PRINTING THREE-DIMENSIONAL OBJECTS

1 .- 63 . (canceled)

64 . A method for printing a three-dimensional (3D) object adjacent to a base, comprising:

(a) calculating at least one deposition parameter based at least in part on a computational representation of said 3D object;

(b) using a print head to initiate printing of said 3D object in accordance with said at least one deposition parameter, wherein said printing comprises subjecting at least one feedstock to heating upon flow of electrical current through said at least one feedstock and into said base, or vice versa, which heating is sufficient to melt at least a portion of said at least one feedstock;

(c) while printing said 3D object with said print head, (i) measuring one or more properties of said 3D object or said at least one feedstock and (ii) determining whether said one or more properties of said 3D object measured in (i) meet one or more predetermined properties of said 3D object or said at least one feedstock;

(d) adjusting said at least one deposition parameter upon determining that said one or more properties of said 3D object or said at least one feedstock measured in (c) do not meet said one or more predetermined properties, to yield at least one adjusted deposition parameter; and

(e) using said print head and said at least one adjusted deposition parameter to continue to print said 3D object.

65 . The method of claim 64 , wherein said one or more predetermined properties is generated by simulating said 3D object.

66 . The method of claim 64 , wherein said at least one deposition parameter is adjusted in real time while said 3D object is being printed.

67 . The method of claim 64 , wherein (c) further comprises using one or more sensors to measure said one or more properties of said 3D object.

68 . The method of claim 64 , wherein said at least one deposition parameter is energy or mass of said 3D object or said at least one feedstock.

69 . The method of claim 64 , wherein said at least one deposition parameter corresponds to an energy or mass of at least one voxel of said 3D object or said at least one feedstock.

70 . The method of claim 64 , wherein (d) comprises controlling a mass of said 3D object or said at least one feedstock.

71 . The method of claim 64 , wherein (d) comprises controlling a deposition rate or mass flow rate during said printing said 3D object.

72 . The method of claim 64 , wherein said heating is Joule heating.

73 . A system for printing a three-dimensional (3D) object adjacent to a base, comprising:

a print head configured to print said 3D object; and

one or more computer processors operatively coupled to said print head, wherein said one or more computer processors are individually or collectively programmed to:

(i) calculate at least one deposition parameter based at least in part on a computational representation of said 3D object;

(ii) direct said print head to initiate printing of said 3D object in accordance with said at least one deposition parameter, wherein said printing comprises subjecting at least one feedstock to heating upon flow of electrical current through said at least one feedstock and into said base, or vice versa, which heating is sufficient to melt at least a portion of said at least one feedstock;

(iii) while printing said 3D object with said print head, (1) measure one or more properties of said 3D object or said at least one feedstock and (2) determine whether said one or more properties of said 3D object measured in (1) meet one or more predetermined properties of said 3D object or said at least one feedstock;

(iv) adjust said at least one deposition parameter upon determining that said one or more properties of said 3D object or said at least one feedstock measured in (iii) do not meet said one or more predetermined properties, to yield at least one adjusted deposition parameter; and

(v) use said print head and said at least one adjusted deposition parameter to continue to print said 3D object.

74 . The system of claim 73 , wherein said base comprises at least one electrically conductive sheet secured to a support.

75 . The system of claim 73 , wherein said one or more computer processors are individually or collectively programmed to further generate said one or more predetermined properties by simulating said 3D object.

76 . The system of claim 73 , wherein said one or more computer processors are individually or collectively programmed to further adjust said at least one deposition parameter in real time while said 3D object is being printed.

77 . The system of claim 73 , further comprising one or more sensors configured to measure said one or more properties of said 3D object.

78 . The system of claim 73 , wherein said at least one deposition parameter is energy or mass of said 3D object or said at least one feedstock.

79 . The system of claim 73 , wherein said at least one deposition parameter corresponds to an energy or mass of at least one voxel of said 3D object or said at least one feedstock.

80 . The system of claim 73 , wherein said one or more computer processors are individually or collectively programmed to, in (iv), control a mass of said 3D object or said at least one feedstock.

81 . The system of claim 73 , wherein said one or more computer processors are individually or collectively programmed to, in (iv), control a deposition rate or mass flow rate during said printing of said 3D object.

82 . The system of claim 73 , wherein said heating is Joule heating.

83 . The system of claim 73 , further comprising one or more tips configured to shape at least one layer of said 3D object.