Originally Posted by fabric_fancy
figure out the size of your starting block and then determine how many 9 patches you have to make to reach the size quilt you want.
Remember to subtract the seam allowances you use when making the D9P for the 9 patch.
Or easier yet ... make a 9 patch then cut it up for the D9P and you can figure out how many of that unfinished D9P you will need.
ali