How to extrude a self-intersecting or curves drawing into 3d?
How to convert Map type drawing into 3d. Extrude option does not work in autocad 2010 software and shows the error message that can't sweep or extrude self-intersecting curves.
It could be extrude in the form of surface.
When it is in form of segments.The curve shouldn't be a polyline type.
If the desired curve is in form of polyline,then software give error.so first explode it make its surface then convert it surface to solid from modify tools..