Merge Vertices
Modify > Merge Vertices
 

Description:

      The Merge Vertices (Modify > Merge Vertices) command will join two or more selected vertices of an object. If you select two vertices, the first will be joined to the second, i.e. the resulting vertex will be in the position of the second selected vertex. The initial distance between two vertices is irrelevant. If more than two vertices are selected, then all selected vertices which are less than the merge tolerance apart in distance will be merged with one another. There is no gaurantee as to which of these vertices will be chosen as the position for the new vertex. The Merge Vertices option window (Modify > Merge Vertices > ...) allows you to set the merge tolerance.  You can "sew" two objects together by first using the Merge Objects command and then selecting the vertices along the seam of each side you wish to bridge (assuming you have lined them up more or less) and calling Merge Vertices.


Notes:

-The merge tolerance must be changed before rather than after performing the merge operation in order for the change to have an effect.

- Faces collapsed in a Merge Vertices command will be removed from the shape.