nConstraint > Weld
Adjacent Borders
Creates a Weld Adjacent Borders constraint for the selected nCloth objects. The Weld Adjacent Borders constraint constrains the nearest borders of the selected nCloth objects using the Weld constraint method. See Weld Adjacent Borders constraint and Edit nCloth.
nConstraint > Weld
Adjacent Borders > 
Opens the Create Weld Adjacent Borders Constraint Options Box window for the Weld Adjacent Borders operation. In this window, you can turn on Use Sets to add the selected nCloth object’s border vertices (all vertices, or just the selected vertices) to a dynamic constraint selection set.