Maya 2016 Merging Verts

Edit Mesh --> Merge Option box

I like having the  check box on for "Always merge for two vertices"

In the Hotkey Editor, Poly Merge Vertices is the one that worked for me, not the Merge Vertices.

Tip from Max to Maya

Flipping Polygon Normal

Mesh Display --> Reverse

Hotkey Editor

ctrl+clt+d

performDetachComponents;
performPolyShellSeparate;