Mark Feature Edges

This option allows you to specify which of the mesh edges that lie along CAD edges are marked as feature edges.

CAD edges are the edges or curves that belong to the underlying CAD model; mesh edges are the line segments that bound the mesh faces.

This option applies only to those mesh edges that lie along edges of the CAD model - it does not mark as feature edges any mesh edges that do not lie along CAD edges. The available settings are:

• No CAD edges - Do not mark any mesh edges as feature edges.
• Sharp CAD edges - Mark as a feature edge any mesh edge that lies along a sufficiently sharp CAD edge (based on the Sharp Edge Angle value, default 30 degrees). For any given CAD edge, either all or none of the mesh edges that lie along it are marked as feature edges.
• All CAD edges - Mark as features edges all mesh edges that lie along any CAD edges.

Marking feature edges in this way activates CAD projection back to the underlying CAD edge when changes are made to the mesh discretization of those edges.