Mesh Weld Vertices
Merges all coincident vertices in a mesh. Coincident vertices are merged and normals are averaged at the merged vertices. This tool is only needed in rare cases.
For example, a file imported from a different system, in a format other than STL, could have all its shared vertices stored twice. This could be detected within the Mesh Repair tool by the presence of a red boundary surrounding each triangle. In that case, the vertices must be merged with Mesh Weld Vertices before using any other Mesh tool.
Access this tool from the Mesh tool palette:
Mesh Weld Vertices workflow
Select the Mesh Weld Vertices tool
.Select one or more meshes.
Click the Weld Vertices button in the lower right corner of the window.
Coincident vertices are merged and normals are averaged at the merged vertices.