Onebyone

I was sure my 1/4" seam was exactly 1/4" . I did the sew 2 1/2" blocks and measure type test. I found this test by Judy Martin and I tried it. I was shocked my 1/4" was off. I had a little problem with block pieces fitting but didn't think it was because of my 1/4". Cut nine
1 1/2" squares and sew together end to end. Press seems to one side. Cut a 9 1/2" x 1 1/2" rectangle. Place sewn strip face to face to the rectangle strip. Your sewn strip should be exactly the length of the rectangle. Don't measure the length with a ruler, measure it to the strip of fabric. Adjust your sewing seam until the sewn strip is a perfect match.