Cannot properly align textures I'm making a cube. The half of the cube is green, the bottom is gray. It's supposed to be a precise split, but no matter what I do, it looks like this (image is of an edge of the cube):



One side is above the halfway point, the other side is below the halfway point. If I add a single pixel to the left side, it goes below the halfway point. Similarly, if I add a single pixel to the right side, it goes over the halfway point.

How do I precisely split the cube into green and brown, with the dividing line being exactly halfway between top and bottom?

This question is related: Exported UV map is blurry and doesn&#39;t line up with UV mapper(editor) but it has no answers. I suspect I may have a similar problem, or at least I could fix my problem if I knew how to fix that other problem.
I'm sure that this isn't the simplest answer but you could split your cube in two pieces and make one piece green and the other brown. Than you could join (in the menu, object, join) the two pieces to one cube again.
(You can assign different colors to objects or to a part of an object in edit mode)