This week's modular cathedral intrigued me with the squared circle shape that comes forward when you don't have the contrast of white-against-color in your windows. Unexpected, and not what I was going for, but still kind of cool.
To make this block you need twelve 5 inch squares. The basic block will finish at 9 inches, but because I prefer sewing my curves after the seams are sewn, I decided to border it with 1.5 inch strips and now it finishes at 11 inches. I may do this for all my blocks.
To make the block, set four squares aside for the backing fabrics, then press the remaining squares in half along the diagonal.
Assemble four modules of backing squares topped by two folded squares. Use a dab of glue at the corners of the folded squares to hold them in place.
Arrange the modules and stitch the block together.
Pin back the curves and topstitch. I was able to do this in one pass, stitching the outside circle first and then moving to the inside window.