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I have a large hole in a mesh that I'm trying to fill:

enter image description here

I've been trying an approach like this:

enter image description here

I'm finding it quite tough, since the number of vertices around the perimeter of the hole don't match a grid.

Is there a better approach to filling a hole like this?

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Select the whole loop around the hole with Alt+RMB (make sure to delete triangles first). Use a Grid Fill option (press Space and type Grid Fill). Then play with its settings.

enter image description here

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    $\begingroup$ just as a note, grid fill will work with an even number of vrtices $\endgroup$ – cegaton May 15 '16 at 19:00
  • $\begingroup$ A combination of this and sculpting seem to do the trick :) $\endgroup$ – ajwood May 15 '16 at 19:09
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The Mesh seems to be fully triangulated, that means no quad based mesh, no edge loops... so I'd say no, there isn't any other way.

Last time I had that problem where I wanted to "repair" a mesh with bad topology I created some years ago, I rebuild the whole thing since it was faster in the end. Another idea would be to retopologize it by using the well-known methods.

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I think it can be solved like this: go to edit mode, in the Mesh menu, click on "clean-up" and "fill holes"

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I think the remesh modifier will close this hole.

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    $\begingroup$ Remesh modifier will close the hole, but will change geometry of the hole mesh depending on its Depth setting, in cases of small organic meshes this could work. $\endgroup$ – Mr Zak May 16 '18 at 10:48

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