81 Patch Scrap Demolisher

It's summertime which means I'm working on scraps! Yesterday I started with the first of nine blocks that will be 9 x 9:
I'm using 3" scrappy squares for this project.
These kinds of quilts are great for using up "busy" print scraps. This quilt will use up 729 scrappy 3" squares. 
I made three of these quilts last summer to demolish my 3" scrap hoard. But I generated a lot more 3" scraps this year.
Here's another look at the three quilts I made last summer:



These quilts were a terrific way to use up scraps and are constantly in use at our house! We will see how far the scraps go this year...
Why do I have so many 3" square scraps? 
Many are cut from the offcuts of quilt backs that are generated when I spray baste a quilt.