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Select a mesh, patch, or PolyMesh object. > Modify panel > Modifier List > Vertex Weld
Select a mesh, patch, or PolyMesh object object. > Modifiers menu > Mesh Editing > Vertex Weld
The Vertex Weld modifier behaves like the Weld feature in Editable Mesh or Editable Patch and welds all vertices that fall within the threshold setting. Vertex Weld is very useful for cleaning up meshes that have vertices that are close or overlapping, but not welded.
The results of three Vertex Weld threshold settings
Example: To apply the Vertex Weld modifier to a mesh:
Create a box with Length, Width, and Height set to 40.
Right-click the box and choose Convert to > Convert to Editable Poly.
Set the sub-object mode to polygon, and select Polygon 6.
Tip: Watch the listing at the bottom of the Selection rollout to see which polygon is selected.
Delete polygon 6.
By deleting the polygon, you create an open mesh.
Apply a Turn To Poly modifier, and set the Selection Level to Object.
Apply a Mirror modifier, and set Mirror Axis to X.
Turn on Copy, and set Offset to –40.
The reflection of the box shares a common seam but the vertices along the seam are not welded.
Apply a Vertex Weld modifier to cement the two boxes into one element.
Note: This combination of steps can be streamlined by using the Symmetry modifier,which will mirror the mesh and weld it in a single operation.
Threshold—The value of the Threshold setting delegates how close vertices can be before they are automatically welded together. Default=0.1
Note: A higher threshold setting will result in welding more vertices, thus removing smaller faces and details. If the threshold is set too high, the mesh will begin to deform.
A threshold setting of 5.5 removes all detail, making the model unrecognizable.
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