Stay safe on the road, Terri.
Joan, glad you can see better now! Hallelujah!
Billi, I did the math and the little squares need to be 2.4 inches to come out at 12" finished. The on point idea is worth experimenting with too.
I'm off to my local quilting group meeting this morning... going to show my Boom quilt and explain the swap process. They want to do a friendship swap between group members! ACK! It's contagious....