Create a Profile Contouring Operation
Between Two Curves

	This task shows how to insert a 'Between Two Curves' Profile Contouring operation in the program. To create the operation you must define: the Contouring mode as Between Two Curves the geometry to be machined the tool that will be used the parameters of the machining strategy the feedrates and spindle speeds the macros (transition paths) .
	This task also illustrates the capability to machine a discontinuous guiding curve.
	Open the PrismaticMilling02.CATPart document, then select the desired `Machining` workbench from the `Start` menu. Make the Manufacturing Program current in the specification tree.
	1.	Select `Profile Contouring` . The Profile Contouring dialog box appears directly at the Geometry tab page . This page includes a sensitive icon to help you specify the geometry to be machined. Set the Contouring mode to `Between Two Curves`.
		The top guiding curve in the icon is colored red indicating that this geometry is required for defining the operation. All other geometry is optional.
	2.	Click the red guiding curve in the icon, then in the 3D window: select the three continuous edges on the top of the part as shown (Guide 1 in figure below) select the three continuous edges of the downward slope on the other side of the part as shown (Guide 2 in figure below). During the selection, answer No to the question about inserting a line.
	3.	Click the auxiliary guiding curve in the icon, then in the 3D window: select the three continuous edges of the downward slope the part as shown (Auxiliary Guide in figure below) select the three continuous bottom edges on the other side of the part as shown. During the selection, answer No to the question about inserting a line.
	4.	If needed, set offsets on the geometric elements.
		The guide and limit elements of the icon are now colored green indicating that this geometry is now defined. These are also indicated on the part.

	5.	Select the Strategy tab page and choose the desired tool path style. You can then use the tabs to set parameters for: Machining such as machining tolerance Stepover (see example) Finishing High Speed Milling.
	6.	In the Macros tab page you should add an appropriate Linking macro that will allow the tool to retract and approach the discontinuous guiding curves. This is described in Define Macros of an Operation.
		A tool is proposed by default when you want to create a machining operation. If the proposed tool is not suitable, just select the Tool tab page to specify the tool you want to use. This procedure for this is described in Edit the Tool of an Operation.
	7.	If needed, select the Feeds and Speeds tab page to specify the feedrates and spindle speeds for the operation.
	8.	Check the validity of the operation by replaying the tool path.
		Please note that the tool tip is shifted below the guiding curves by a distance equal to the tool corner radius. If you want the tool tip to exactly follow the guiding curves you should enter an appropriate Offset on Contour value.
	9.	Click OK to create the operation.
	More About Profile Contouring Operations Multi-Edition You can modify the parameters of two or more Profile Contouring operations in one shot by means of the `Selected Objects > Definition...` contextual command. See Editing Parameters of Several Profile Contouring Operations. Collision Checking A Collision Checking capability is available in the Geometry tab page, which allows collision checking between the tool and guide elements during macro motions. See Reference section for more information.