How to create 3D tube and 3D solid extrude from a curve 3DPOLY object

command 3DF - 3dpolyfillet.
command c2t    -Curve to tube or 3dpoly to tube/pipe.
command c2t0 - Curve to solid tube without hole.

Make sure you know to use 3DPOLY command in Autocad.
Lisp routine below :
lisp file   and doc file  : doc file


Enjoy


 Sim
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