Originally Posted by
QuiltnLady1
1) Make yourself several 2.5" strips, sew them together then press them open. They should measure 4.5".
Two strips should measure 4.5", I agree, but the test is much more accurate if you sew three strips together and make sure the center one measures 2" while the total measures 6.5".
Also, you should press the seam the way you usually press your seams when making a quilt. If that's to one side, without setting the seam first, then do it that way for your test. It won't do you any good to adjust everything to a pressed open seam if you never press your seams open.