Have you ever wondered why your completed block is not the size it should be even though your seams are straight and a perfect 1/4 inch?

When you press your seams, they take an additional 1/16th of an inch off your block per row!  To avoid this problem, use a scant 1/4 inch seam.

As long as you are consistent with your seam allowances, no one will ever know that your 12 inch block was supposed to be 12 1/2 inches!

Happy Quilting!