To produce an Offset Surface in the Main Menu select Operations - > Transformation - > Offset Surface
This operation translates each point of an Object (a set of Objects) along a local normal by a given Offset distance (signed number, negative value meaning inner offset).
Offset operation is applicable to faces, shells and solids.
Advanced options.
Example:
TUI Command: geompy.MakeOffset(Shape, Offset), where Shape is a shape(s) which has to be an offset, Offset is a value of the offset.
Arguments: Name + Object (face(s), shell(s), solid(s)) + Offset value.
The Result will be a GEOM_Object.
Our TUI Scripts provide you with useful examples of the use of Transformation Operations.