So, for each quilt I used two 42-piece Lexington charm packs and had leftovers.
I paired a light and a dark for each pinwheel and then scattered them on my design wall until a pleasing pattern emerged.
Once they were sewn together, I bordered them 3 times....
First with a 1/2" dark strip...
then a 2" light strip...
and finished with 6" outer borders set with 4 pinwheels for cornerstones.
(I made larger pinwheels out of yardage for the cornerstones so I'd have a bit bigger outer borders, but 5" would work, as well.)
There is no border length measurement greater than 43 1/2", so I was able to cut all of them from the width of the fabric, with a total of just over 1 yard!
Backing was about 2 3/4 yards.
I machine quilted it using a wavy line stitch on my faithful Bernina 730 (which I bought used in 1985 for more than the original owner paid for it!!), and had them done in under 2 weeks!
Here's the pertinent info:
About 5 1/2", finished
Border Sizes, finished:
2 charm packs
4" of dark narrow inner border fabric
10" of light middle border fabric
24" of outer border fabric
2 3/4 yard
Have fun and Happy Quilting!!