import FreeCAD
import Part

def create_cad_model(length, width, height, material):
    """
    Create a basic 3D box based on user input (dimensions, material).
    In a real-world scenario, this function can be extended to handle more complex geometry.
    """
    # Creating a 3D box
    box = Part.makeBox(length, width, height)
    Part.show(box)
    return box