Use the Global Merge command to search the entire mesh to find and merge all nodes that are within a specified distance from each other. This distance is the merge tolerance. The Global Merge command acts on the entire mesh, whereas the Merge command acts only on the nodes you specify.
To use this tool, click 
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In the Input parameters section of the dialog, specify the merge tolerance. Nodes closer together than this tolerance will be merged together.
Note: If you enter a negative value, the node labels will be squeezed to remove unused values, and all the nodes will be labeled sequentially, which will save on computer memory and analysis time.
Decide whether you want to merge nodes along an element edge only. This option should not be selected when using the Global merge tool to fix free edges.
In the Selection option section of the dialog, indicate whether you would like to use filtering and if so, the type of filtering.
Note: Many of the mesh repair tools involve selecting or manipulating nodes. Ensure that the nodes in the part are visible and selectable by activating the required layers in the Layers pane.
Dialog elements
- Merge tolerance
- Specifies the minimum distance between nodes. If nodes are located closer together than the specified merge tolerance, they will be merged.
Enter the required merge tolerance (mm).
- Merge report
- Upon completion of a global merge, this area displays the number of nodes and elements that were moved.