umm...a long arm makes those big quilts so much easier. I have done a full sized quilt on my sit down domestic but only a full sized and only did straight line quilting with a walking foot and acctually had a helper to help me manage the quilt. That was enough of that for me. Yeah, If I didn't have my long arm, I would pay someone else to do those those big quilts for me or rent out time on a long arm at the local shop. I know people do quilt those big ones on a domestic. but I am not one of them. I do have a big cabinet with a fold up extra bit behind the machine and to the left so I really don't have too much problem piecing the quilt or hemming. Although that last 100 X 100 flannel one I put binding one even kept wanting to fall off that cabinet.