Create an offset to the selected part's mesh. Volumetric expand or shrink a part by setting an offset to the original part.
Note: Click Simple UI to switch between
the simple and the advanced User Interface. In the Simple UI, only the
tools for minimum workflow are visible.
In the Prepare tab, click Offset.
Select part.
Enter the desired distance and select the inward or outward direction.
Click Set.
Offset
Offset has the Global and Local options to affect the whole part or just selected faces.
Global
This affects the entire selected part
Global also has the check option New Part to add the offset as a new subpart in the parts list.
Local
This only affects selected faces.
The Brush option selects faces by drawing on the part.
The Rectangle option can draw a rectangle to select faces.