Offset Surfaces
Use the Surfaces: Offset tool to offset surfaces or solids in a normal direction.
The topology of the surface edges (free, shared edges, and so on) is maintained during the offset function. Some individual surfaces will be trimmed or extended to maintain the connectivity.
Note: This functionality is not supported for FE
geometry.
Tip: Offset surfaces in the opposite direction of the surface normal by
entering a negative offset value.