Originally Posted by
coffeebreak
INteresting. I'll keep this in mind, but my problem is that I can only get fabric that is 44" wide.
You should be able to use 44" fabric for this technique, it WILL work. Don't be scared by the math, it's quite simple once you grasp the concept.
Pretend this rectangle is 44" wide. Not wide enough for your backing, right?
Notice carefully what happens when you cut diagonally, slide the piece on the bottom left UP, and the piece on the upper right DOWN. The width of the rectangle (your fabric) gets WIDER.
It also gets shorter, which you will have to take into account. But, this is a good, reliable way of making 44" fabric wide enough to use for a backing.