Mesh Patch
Fills holes in meshes while recognizing the curvature characteristics of the surrounding area. As with the Mesh Hole Fill tool, the boundary must be a closed region.
Access this tool from the Mesh tool palette:
Mesh Patch Control Options
Max edge length
Specifies the maximum length of any triangle edge (in current linear units)
Stitch tolerance
This tolerance is used to determine which boundaries should be stitched together. If two boundaries are further apart than this value at some point, they are not stitched together at that point.
Mesh Patch workflow
Select Mesh Patch tool.
Select a mesh.
Set the view so that you clearly see both sides of the hole as well as any features running through it.
Define two lines on each side of the hole (by putting down four points) that will act as profiles.
A flowline is created between the two profiles.The profiles and flowline are view based, and will disappear if you change the view. If this happens, you can click Patch View to reset the view
Modify the shape of the flowline by moving its control points, so that it follows the shape of any feature going through the hole. You can also modify the position of the corner points.
Click Build to build a mesh patch.
A mesh patch is built between the green lines. Shading the mesh will help evaluate the result.
Repeat steps 5-6 until satisfied with the result. You may need to hit Patch View if the view was changed.
Click Stitch to substitute the patch to the mesh area it covers and stitch it to the surrounding region, forming a single mesh.