Selecting vertices in reference to a plane, ex: Select all vertices to the right of the origin So I just learned about symmetrize, but don't want to start over on my mesh. Is there a way I can easily select the half I like less, delete it, and then use symmetrize and automerge doubles to have a perfectly even mesh?
Select one vertex in the middle of your model, then press Menu > Select > Side of Active and choose the axis and axis mode in the redo panel: