Perform the merge face-edge operation on a single or multiple shapes. For a single shape, the merge operation is only available for a single face; for multiple shapes, the operation is automatically available for all edges included in the selection criteria.

The merge operation is performed only when the angle between the selected edges are within the criteria. The merging edges need to be connected to other edges for the operation.

The merge face-edge operation does not work on edges existing on a node (an edge of length 0). These edges are not common but can happen during the modeling process. In this case, the join edge function is impossible and needs to be modified using Create mesh and manual operations such as Move node.  

If the merging edge is composed of 2 short edges on one side and one long edge on the other side in the suturing process, the long edge is divided to fit in with the 2 short edges, such that all the shared edges are in the same phase for the fuse operation. Hence, when performing the merge face-edge operation after the fuse process, the shell edge can be formed too short by mistake is the adjacent edge is short.

To prevent this problem, it is possible to perform the fuse process before the merge face-edge operation. For large shell models, the merge face-edge operation may be slow and hence it is efficient to perform partial fuse and merge face-edge operations at the same time.

The Start point of the object is shown as a red circle and the End point a blue circle.