One thing that opened up a whole new world to me when I started modeling with T-Splines was the realization that faces, edges, and points can be deleted to achieve different effects. Some of those effects include adding holes, combining faces, and rounding corners to name a few. In the image below you will see a T-Spline plane on the left, on the right the indicated face, edge, and point were deleted to change the control frame on the plane.
Now, start combining the “delete” concept with a few simple "Edit Form" movements and you really begin to see your models take shape.
Don’t forget that when you use the "Edit Form" command it works on faces, edges, and points. Also, if you double click on an edge it will select the entire chain of edges to be moved. See the image below for examples of using the "Edit Form" command to manipulate edges and a point.
Continue this workflow and you too can design your very own Halloween mask.
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