Ahhhh. How I love doing a zigzag edge. My first quilt (queen size no less) I did with small 9 patches set on point so the edges would be zigzag. Then I didn't know how to bind them so got a friend to help me with that. She sewed all the short pieces on by machine (in no time...would have taken me hours!) and I did the hand turning. Then I went back and she did the other direction (again, in no time at all) and I did the hand turning. That was many years ago and I still love it on my bed. I've since done a blooming 9 patch that is put together on the diagonal but does not have zigzag edges...use that on my bed sometimes as well.