Hollow Cubes pieces out and spent a few hours arranging them on the design wall. I sewed together 5 vertical rows, so it's a start. This quilt won't be as big as the Tumbling Blocks quilt. There are 13 vertical rows, and there are 21 triangles in each row. I am excited to get it finished now! I had to number each piece, as it would be easy to turn those triangles the wrong way while sewing.