this is how the carpenter's wheel is done..it is really one block, but then one day somebody said, HEY, that would make a great quilt..very little cutting, and if you do it Debbie Maddy's way, there are NO "Y" seams either...
I designed a bunch of "big block baby quilts" doing the same thing...what was a 12" block became a 40" baby quilt!
Have fun with it and be sure to post pix!