I saw this on BB blog and made a scrappy rendition that looks like the attached image from my EQ files. I forego the 3" border as it is 88 x 104 without it. Note the outer "ring" of star blocks with 1" finished blocks in the center. I used over 550 2 1/2" squares in the 71 checkerboard blocks alone. There is no reason why you couldn't use HST in the FG blocks around the star square. I used the no waste FG method on the star blocks...used lots of stash in this one!
https://barbarabrackman.blogspot.com...eum-quilt.html