How do you keep strip quit piecing straight - suggestions?
A friend just pieced a strip quilt and it is crooked in the middle. We talked through her process all seems okay with how she pieced it but it still has a slight hour-glass shape in the middle. Over 1/2 inch difference in width at the middle when compared to the top and bottom. An suggestions as to why this happened and how to prevent it? Thanks.
Carla