Problem with warped quilt
I have just finished a Lone Star wall-hanging with 5 different piece borders. It's about 55 inches square. This was all made using the Quilt As You Go technique, so the quilting was done in stages. At no point was I aware that the quilt was not flat. All the borders were measured carefully and were definitely square when added. Maybe I wasn't paying enough attention?? Anyway, I hung it up two days ago and was horrified to see that it was "cupping" badly. The large Lone Star centre was bowing out. The quilting evenly dense over the whole quilt, so that could be part of the problem, but it's hard to believe that just adding more quilting to make it uniformly even across the whole quilt is going to solve this problem. Is there something else I should be doing? I've removed the binding already in case that was too tight and was drawing in the edges. Any advice would be much appreciated!