           _cad.mesh.scale.set(10, 10, 10);
            _cad.mesh.position.y = 0;
            _cad.mesh.position.x = 0;
          });
          _cad.loader.onLoadComplete = function() {
            _cad.scene.add(_cad.mesh);
            _cad.render(); // initial render because the objects arrive on the scene late
          };

          _cad.ambientLight = new THREE.AmbientLight(0x555555);
          _cad.scene.add(_cad.ambientLight);

          _cad.directionalLight = new THREE.DirectionalLight(0xffffff, 0.