Started on mine today. Many thanks to Gail B for posting her casserole carrier that started the ball rolling! I cut my squares at 20 1/2 inches and I am glad I did. I used 2 layers of Hobbs 80/20 batt and with the quilting my sandwich has shrunk in to almost 20 inches. I will re-square it at 20 inches before adding my handle, D-rings and binding.