A method for forming a three-dimensional object with at least one conductive trace, comprising: injecting a conductive material into an injection structure (702;1002;1101;1201;1302) of an intermediate structure (201;700;1001;1103;1204;1301;1406), the intermediate structure (201;700;1001;1103;1204;1301;1406) comprising at least one predefined location (1004; 1102) for at least one conductive trace, the intermediate structure (201;700;1001;1103;1204;1301;1406) made of a material having an electrical and/or thermal conductivity that is less than the conductive material, the conductive material injected into the at least one predefined location (1004;1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406) via the injection structure (702;1002;1101;1201;1302) to form the at least one conductive trace after the intermediate structure (201;700;1001;1103;1204;1301;1406) that includes the injection structure (702;1002;1101;1201;1302) is additively formed, thereby forming the three-dimensional objectwith the at least one conductive trace, the intermediate structure (201;700;1001;1103;1204;1301;1406) and the injection structure (702;1002;1101;1201;1302); and removing the injection structure (702;1002;1101;1201;1302) from the intermediate structure (201;700;1001;1103;1204;1301;1406) subsequent to the conductive material being injected into the at least one predefined location (1004; 1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406); and curing the conductive material that was injected into the at least one predefined location (1004; 1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406). injecting a conductive material into an injection structure (702;1002;1101;1201;1302) of an intermediate structure (201;700;1001;1103;1204;1301;1406), the intermediate structure (201;700;1001;1103;1204;1301;1406) comprising at least one predefined location (1004; 1102) for at least one conductive trace, the intermediate structure (201;700;1001;1103;1204;1301;1406) made of a material having an electrical and/or thermal conductivity that is less than the conductive material, the conductive material injected into the at least one predefined location (1004;1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406) via the injection structure (702;1002;1101;1201;1302) to form the at least one conductive trace after the intermediate structure (201;700;1001;1103;1204;1301;1406) that includes the injection structure (702;1002;1101;1201;1302) is additively formed, thereby forming the three-dimensional objectwith the at least one conductive trace, the intermediate structure (201;700;1001;1103;1204;1301;1406) and the injection structure (702;1002;1101;1201;1302); and structure (702;1002;1101;1201;1302) of an intermediate structure (201;700;1001;1103;1204;1301;1406), the intermediate structure (201;700;1001;1103;1204;1301;1406) comprising at least one predefined location (1004; 1102) for at least one conductive trace, the intermediate structure (201;700;1001;1103;1204;1301;1406) made of a material having an electrical and/or thermal conductivity that is less than the conductive material, the conductive material injected into the at least one predefined location (1004;1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406) via the injection structure (702;1002;1101;1201;1302) to form the at least one conductive trace after the intermediate structure (201;700;1001;1103;1204;1301;1406) that includes the injection structure (702;1002;1101;1201;1302) is additively formed, thereby forming the three-dimensional objectwith the at least one conductive trace, the intermediate structure (201;700;1001;1103;1204;1301;1406) and the injection structure (702;1002;1101;1201;1302); and removing the injection structure (702;1002;1101;1201;1302) from the intermediate structure (201;700;1001;1103;1204;1301;1406) subsequent to the conductive material being injected into the at least one predefined location (1004; 1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406); and curing the conductive material that was injected into the at least one predefined location (1004; 1102) of the intermediate structure (201;700;1001;1103;1204;1301;1406).