Originally Posted by Carol J.
Are you sure the bow in the fabric didn't come when you were cutting the strips? That happens to me when I use the cutter. Look at your strips pulled out all the way,is there an "elbow" in the center?
Carol J.
That's what I was thinking.
If it's the first part of the process, sewing plain strips together, it could be one of or a combo of the way the strips were cut (which would have the bow in the middle if the fabric wasn't aligned properly at the time), and/or not reversing directions for each strip (which gives more of J curve towards one end).