Hello, You can do this as follows: 1) Add a 'hinge' component to your design, using the editor pane, under Add->Controls->Hinge 2) Adjust the location and orientation of the hinge as desired. Notice that the components will rotate around the hinge's axis, so it must be placed and oriented accordingly. 3) Edit the hinge using the editor pane, and under 'Connections' select which servo controls this hinge, and also which components are connected to this hinge. You will see that the components starts rotating accordingly on the viewer pane. You may need to adjust the positioning of the hinge and component if needed. 4) Finally, you can adjust the hinge travel, and trim using the editor pane. Let us know if you have any further questions. -SIMNET Support Team