Creating a Contact Constraint

	Contact-type constraints can be created between two planar faces (directed planes).
	The common area between the two planar faces can be a plane (plane contact), a line (line contact) or a point (point contact).
	The following table shows the elements you can select.

	This task consists in applying a constraint between two faces.
	Before constraining the desired components, make sure it belongs to a component defined as active (the active component is blue framed and underlined).
	Open the Constraint7.CATProduct document.
	1.	Click the `Contact Constraint` icon . This command is also available from the `Insert` menu.
	2.	Select the face to be constrained, that is the red face as shown.
	3.	Select the second face to be constrained, that is the blue inner face in the direction opposite to the red face.
		As the contact constraint is created, the red component is moved so as to adopt its new position. Green graphic symbols are displayed in the geometry area to indicate that this constraint has been defined. This constraint is added to the specification tree too.
		Graphic symbols used for constraints can be customized. For more information, refer to Customizing Constraint Appearance .