nursie76 or anyone who wants to make this ----just a little note before i forget---if you want to make that center square one piece [if you are using 3.5" squares] then the center is 6.5". All you need to do to figure the center is use the measurement of the size block you want to make---we'll use 4.5 as an example? 4.5" and double it=9 inches and subtract half an inch for [2] quarter inch seams and you have 8.5 inches-----this would be your CENTER SQUARE if you use 4.5" blocks!!! 8.5" OK? clear as mud? hope this helps