Q:

how to split an object into two

Beginner in blender. I am trying to split an object into two equal parts by bisecting it. However whenever I try to bisect it, Blender gives me the error message, "Selected edges/faces required." What does this mean and what should I do?

A:

Bisect tool is described in Blender online manual but there are more precise ways to do it. You select, border or circle, exactly half of the faces or, when your object is large single quads, use Ctrl+R, select and then separate by selection.
I write this as Bisect doesn't seem to snap to edges which is vital when you want to halve and object and keep faces intact. The idea behind the Bisect tool is just to make a cross-section and that doesn't have to mean halves.

