Most of my quilt pieces are cut using the Accuquilt and they are cut to use exact 1/4" inch for all the points to be pointy and all the pieces to fit. I rarely have to square up. The Juki TL machines come with a scant 1/4" foot and I use that and get an exact 1/4" seam. I don't question why; it works so that's what I use. Every machine foot is different when it comes to 1/4". Aggravating.