I just used the Hobbs 80/20 double sided fusible on a twin sized quilt. It was great until I realized that one fused side would puff/pucker if I kept quilting. So I stopped and separated the batting from the material, smoothed out the extra fabric, and then fused it again. It worked okay after that, but it wasn't as straightforward as I thought it would be. My next project is larger, so I'm not sure how I'll approach that. I have one more of the batts to use. Can't use spray basting and need to be careful with the Elmer's glue...it knocked my timing out once and just don't want to go back there.