So many of you have mentioned problem with getting a true 1/4 inch seam. Also, why do we use a 1/4 inch seam? On Saturday, I was watching a quilting show on PBS and they mentioned that the industrial factories only use a 1/4 inch seam. Also, that it is so helpful in easing in curves. It states that for instance, why use a 5/8 seam when after you fight to ease in a collar, you only have to trim to a 1/4 inch seam anyway. Sounds logical, but I never did find out why in quilting we use a 1/4 inch seam.