You can use a specific composite
rendering style to shade the surfaces of an object with its edges, except the smooth ones. A smooth edge is an edge that
does not break the continuity of the geometry, contrary to a sharp edge.
Click Shading with Edges without Smooth Edges
in the View toolbar or select View > Render Style > Shading with Edges without Smooth Edges.
Setting a shaded object to Shading
with Edges without Smooth Edges has the following effect:
in the 