Originally Posted by Butterflyblue
Ditto! It's much easier and takes less time to cut bindings cross grain, and while I think it sounds theoretically probable that bias bindings are stronger, I haven't seen sufficient proof of it to make me take the extra fabric/trouble to make my bindings on the bias.
The "theory" is that if you cut your binding cross grain, then you would have a single thread on the edge, for the entire length that you cut. However, I doubt that my binding is cut so cleanly cross grain across the entire width of fabric for that to be true. So, my cross cut binding may be a "little" weaker than bias cut binding, but not enough to make a big difference for my quilts, which are not heirlooms.