Smoothing groups

not sure if this is possible in rhino but just curious to know.
in 3ds max there is a tool called smoothing smooths the mesh in accordance with mesh angles.following image shows the example.

mesh.3dm (405.8 KB)

Have a look at the Weld and FlatShade commands in the Help file.

Hi Junkim

In addition to johns reply, have a look at the help page on weld
there are also tools to unweld


thanks John and Willem. I will test more and see if I can do it.