Linking the Second Piston Link the second piston to the central arm. Click Zoom to Area (View toolbar), and zoom in to Piston-1. Drag Piston-2 adjacent to Central_Arm-1, and then click in the graphics area to clear the selection. Click Zoom to Area (View toolbar), and zoom in to Piston-2. Clear the Zoom tool, click Add Relation (Dimensions/Relations toolbar), and select the centers of the arcs for Selected Entities. In the PropertyManager, under Add Relations, select Coincident , then click . Parent topicSketch Blocks Previous topic Linking the First Cylinder Next topic Linking the Second Cylinder