If you go to Nancy Zieman's website, nancysnotions.com you can watch the whole series of shows by Betty Cotton.
I have used this method and it is neat, but it will create a somewhat stiff quilt because of the seams.
When I did the Cotton Theory quilting, I bought Hobbs 80/20 batting and cut the 18 inch strips myself. Gave me more money to spend on thread! WOO HOO