I love Jack's Chain too! But those of you looking at that pattern might want to be aware that it uses 1.5" squares for the 9Ps, rather than 2.5" like we will be making. Those are 3" finished 9Ps and ours are 6" finished. You can adapt to the bigger size 9P, but you'll have to draw up your own center hexagon template, and you will have less "rings" in your quilt, because everything is bigger. If that's ok with you, go for it! I might too... Either that or an Irish Chain.