I do use a 1/4 inch seam foot on my machine. Will I need to cut of extra from each side in the end though? I was making the top and bottom 12.5 by 4.5 and the middle squareas all 4.5 by 4.5 but It seamed like I always had to cut it somewhere for it to line up and then it was not a 12.5 inch block.