Creating edge-defined Coons surface patch meshes

You can create a surface called a Coons surface patch, a mesh connecting four edges. You select the entities that define the edges. Edge entities can be arcs, lines, or polylines. The four edge entities must form a closed loop and share endpoints. A patch is a bicubic surface (one curve extends in the M-direction and the other in the N-direction) interpolated between the four adjoining edges. You can select the edges in any order. The first edge you select determines the M-direction of the mesh.

To create an edge-defined Coons surface patch mesh    

Advanced experience level

   1   Do one of the following to choose Coons Surface ():

    On the ribbon, choose Draw 3D > Coons Surface (in Draw 3D Meshes).

    On the menu, choose Draw > 3D Meshes > Coons Surface.

    On the Draw 3D Meshes toolbar, click the Coons Surface tool.

    Type edgesurf and then press Enter.

   2   Select the first edge.

   3   Select the second, third, and fourth edges.

The values of the Number of M-Direction Surfaces and N-Direction Mesh Density control the density of the mesh.
Choose Tools > Drawing Settings, click the 3D Settings tab, click the Surfaces tab. then under Surface Settings, change the Number Of M-Direction Surfaces and N-Direction Mesh Density values.