add_stackup_3d# Maxwell2d.add_stackup_3d() → Stackup3D# Create a stackup 3D object. Returns: ansys.aedt.core.modeler.advanced_cad.stackup_3d.Stackup3DStackup class. Examples >>> from ansys.aedt.core import Hfss >>> hfss = Hfss() >>> stackup = hfss.add_stackup_3d()