Merges two or more nodes together. First select the surface with the nodes that are to be merged. Then select the reference surface(s). Select a point on the reference surface to merge the nodes with. Then select the nodes to be merged, and click the middle mouse button to accept. Pressing the middle mouse button twice will exit from the function.

Merges nodes that lie within the specified tolerance of each other. This is useful for reducing data. Other faceted editing functions and repair methods will also be more robust if duplicate nodes within a surface are removed.