Originally Posted by
dunster
If this helps you, that's great. The problem I see is that the scant 1/4 inch is dependent on your fabric. If you're sewing with heavier fabrics, you need to sew with a little less seam allowance. It's not the width of the seam that matters - it's the width of the fabric between the seams.
I had never heard that different fabric has different requirements. That makes a lot of sense. Thanks dunster.