Suggestions on squaring large center block
I am making quilt with a center medallion made up of 1-1/2 squares. I was very careful when I cut the strips and sewed them together then recut the opposite way. but..... Some of my seams are off and it is not square! It is made similar to a postage stamp quilt. I would like to keep my outer squares the same size all around. Should I just pull and tug at the ironing board? Any suggestions appreciated. I hope I have made myself clear!