I want the edges of my quilt to be straight, not rippled! Still working on that one. I understand the principles of how to get them straight, and am getting better. Currently I'm finishing up a baby quilt made from blocks I pieced over 10 years ago, at a time when I didn't understand so much about precision in piecing. Consequently, we have a serious rippled edge issue here. I have found that if I Elmer's glue baste before quilting, making sure the borders are heavily glued, I can pretty much pound those edges into submission and once they're quilted down much of the ripple disappears. That's my go-to solution when all else fails.