Crease Mode The Crease mode controls the change in direction between faces of the subdivision…
cadmovie1604_06 – Subdivision Modeling – Part 6
Face Extrude Mode
This mode is ideal for adding apart to your model by extruding a face. If you have used Push/ Pull tool, then you might be familiar with the concept of extruding a face. When using this concept with subdivision surfaces, the results can be slightly different, but the concept is still the same: the extruded face mode will extrude the face of the object perpendicular to the plane of it.
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