wavy boarders...
I just finished a top and the boarders were so wavy,I have made maybe 50 quilts. I have never had this to happen, I used 2 colors in this top but different shades and fabric patterns( all batiks) the biggest boarder was finished 4 and 1/2 inches and was 1/2 square triangles pieced together and 2 other boarders were cut 2 and 1/2 inches. All was measured and sewn, quilt top on the top one side, sewing down and the boarder on top on the other side sewing up. and the next boarder was sewn in the other direction, as I was taught. Once again, I have never had any trouble with wavy boarders ,what could have caused this? I have only worked with batiks 2 times. Does this usually happen with this type of fabric ,what did I do wrong?