The Mirror Tool applies a negative scale to flip your model. This is bad. The Mirror Modifier and Symmetry Modifier rebuild the geometry mirrored, this is acceptable.
This thread is about cgsociety and cgtalk shutting down. Edit; just realized that the first post has an edit about (imo irrelevant) AI talk, so you are not purposefully derailing. My bad for overseeing that. In the context of this thread and if you where reading thru it; It should have made it clear to you that Archiving,…
Weld the verts there, you have a hole in your base mesh. If that doesn't fix it delete and rebuild the faces in that region. hashtag Maya sucks. :pleased: