Originally Posted by Tartan
...... I use bias if doing curves. On straight edges, I find that straight binding lays flatter with fewer waves.
If i'm using bias binding - i pin it to keep it from stretching as i sew - this may be why it's not laying flat.
I normally use straight grain because it's simpler. I do want to thank you ladies for this thread today, because i'm quilting a project that i'm going to curve the corners instead of squaring them off.