Originally Posted by
dunster
I quilt on a longarm, so I try to make the backing 4" wider all around. I don't find it to be a waste of fabric, since after quilting I trim off the extra and use it, usually as binding for the same quilt, sometimes in scrap quilts.
I do need the 3 to 4 inch extra for the long arm as well. Needed so the side clips don't bump into the machine.