Originally Posted by Johanna Fritz
Difference in quilting density between the center and the edges can cause this. Also if your outer edges next to binding are bias edges...same thing. Pull edge horiz and vertically...gently. One side should resist...this is the straight of grain side. If both ways give, you are on bias all around.
This makes sense to me also. I have a tablerunner pattern by Darlene Zimmerman that is all squares and straight stitching but it is laid out on a diagonal and then the sides are cut leaving bias all along the edges. I love the pattern--Happy Homemaker--but the next time I make it or if anyone here tries it, be warned. Starch your fabrics before you cut off those edges!