Loft with Guide Curve and non-Planar Profile
You can create a guide curve loft by using two or more profiles and one or more guide curves to connect the profiles. The profiles can be either planar or non-planar. The guide curves help you control the intermediate profiles that are generated.
To create a loft using guide curves and non-planar profiles:
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Use a split line to create a non-planar profile on a model face.
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Sketch one or more guide curves.
See
for using guide curves with a loft.
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Add a Pierce relation between the guide curves and an edge or vertex on the non-planar face.
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Sketch the remaining profiles needed to create the loft.
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Add relations between the profiles and guide curves:
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Pierce relations between the guide curves and vertices, user-defined sketch points, or both, on the profiles.
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Coincident relations between vertices, user-defined sketch points, or both, of the guide curves and the profiles.
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Non-planar profile with split line and guide curve
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Non-planar profile with split line and guide curve leading to planar profile
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Click one of the following:
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Lofted Boss/Base 
on the Features toolbar or Insert, Boss/Base, Loft
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Lofted Cut 
on the Features toolbar or Insert, Cut, Loft
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Lofted Surface 
on the Surfaces toolbar or Insert, Surface, Loft
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In the PropertyManager:
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Select the profiles to loft in the graphics area for Profiles 
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To select the profile sketch on the non-planar face, you must use the Select Group 
tool in the
SelectionManager
to select the individual profile sketch edges.
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Click OK 
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Related Topics
Loft Overview
Loft PropertyManager