To create a Solid in the Main Menu select New Entity - > Build - > Solid.
Firstly, you can create a Solid from a list of shells.
The Result will be a GEOM_Object (SOLID).
TUI Command: geompy.MakeSolid(ListOfShape), where ListOfShape is a list of shells from which the solid is constructed.
Arguments: Name + A closed shell or a list of closed shells.
Example:
Secondly, it is possible to create a Solid (or a compound of solids) from a list of connected faces or shells.
The Result will be a GEOM_Object (SOLID or COMPOUND).
TUI Command: geompy.MakeSolidFromConnectedFaces(ListOfShape, isIntersect), where ListOfShape is a list of faces and/or shells from which the solid is constructed and isIntersect is a boolean flag which, when set to True, forces performing intersection/sewing between arguments
Arguments: Name + A set of connected faces and/or shells + Boolean flag.
Our TUI Scripts provide you with useful examples of creation of Solid from shell and Solid from connected faces.