[TIN;F]
Creates TIN surface from 3D faces
Open the drawing file that contains 3D faces or draw 3D faces using command 3DFACE.
3DFACE command will create three-sided or four-sided objects in drawing.
Select 3D face entities to create surface.
In addition, user will get option to add 3D faces as a surface break lines (Yes - means to add edges to the 3D faces as break lines, No - means that surface will be created only with points of 3D faces).
Watch video tutorial to see how the command works