Create solid from 2 faces
I have 2 arrays of points that are flat closed profiles. I need to create solid with that profiles as bottom and top faces.
So I create 2 BRepBuilderAPI_MakePolygon's, added points to them, closed them, created TopoDS_Face using BRepFill::Shell(poly.Wire(), poly1.Wire()) and saved it in *.step.
It works correctly, but I got shell without "body" (only side walls), not solid. Code is attached (code.txt).
If I use BRepFill::Face(), it is empty and it cannot be saved (exception is occured).
How can I create closed solid in this case?