Composite Curve
You can create composite curves by combining curves, sketch geometry, and model edges into a single curve. Use a composite curve as a guide curve when creating a loft or a sweep.
To create a composite curve:
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Click Composite Curve 
on the Curves toolbar, or click Insert, Curve, Composite.
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Click the items (sketch entities, edges, and so on) that you want to join.
The selected items appear in the Composite Curve Property Manager, under Entities to Join in the Sketches, Edges, and Curves to Join 
box.
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Click OK 
to create the composite curve.
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Select the edges on the model for the curve.
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Create the sweep profile sketch, then use the composite curve as the sweep path.
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Here is the completed sweep cut.
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