I did use the 5 " squares and they were way to big,I tried cuttig them down to get a 4 " square. Am still trying to get the right measurments. I am trying the d9p using 3 1/4 " squares trying to get a 4"sq. then it will take 6 sqs. across and 6 down to get 24 " then add the binding . Time will tell and I will let you know.