I made 620 hourglass blocks plus 9 "odd" blocks to toss into the mixture for fun. Why so many? For each two 5" squares, you end up with 2 identical hourglass blocks.
Duplicate blocks are being stacked on my cutting table to be used in the lower half of the quilt top.
Although the directions for this quilt pattern say to sew the blocks into rows and then sew the long rows together, I am sewing blocks into a four-by-four grid. This makes it easier for me to check fabrics to make sure the same fabrics are in the same grid... or in the grids on each side of them.
Like most folks, I don't have a huge design wall, so I moved the 3x3 grid of 4x4 super-blocks to the left to open up some more space.
So far, this method is working for me...