How to build small “bridges” across gaps within a mesh, so that Mesh > Mesh Cleanup > Mesh Hole Fill can be used to fill up the remaining holes.

Build a bridge across a gap in a mesh

1. Choose Mesh > Mesh Cleanup > Mesh Bridge.
2. Select a mesh.

   The mesh boundaries are highlighted in green.

   
   Note

   The tool works only within a single mesh, not between two separate meshes. If you have two meshes, use Mesh > Mesh Partitioning > Mesh Merge first to combine them.

3. Click on a boundary to select the first endpoint for the bridge.
4. Click on the opposite boundary to select the second endpoint for the bridge.
   

   Locators indicate the location of the endpoints. The edges that will be used in the bridge are highlighted.

5. Select the locators and move them along the boundaries to fine tune the position of the endpoints.
6. Click Go.

   A “bridge” made up of two triangles is built between the endpoints.

   
7. Use Edit > Undo to undo the bridge and start again if necessary.
   Note

   If you also build a bridge at the other end of the gap, you produce a hole which can then be filled with Mesh > Mesh Cleanup > Mesh Hole Fill.