JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Surface by Corner Points Used to construct a B-spline surface by defining its four corner points, which may be non-planar. You can access this tool from the following: Ribbon: Modeling > Surfaces > Create Surfaces > Construct Surface > By Corners Toolbox: Create Freeform Surfaces Key-in: CREATE CORNERSURF To Construct a B-spline Surface by Defining Its Four Corner Points Parent topic: Creating Surfaces