I keep mine handy and threaded, never know when I will need it especially for long seams for a backing. I use mine to do the edges of bookmarks I embroider, finished the edges of fabric for embroidering other things, repairing seams that come apart. I even bought a book on quilting with the serger and made a whole top using it, trims and sews all at one time. It is a machine you have to use your imagination with and you will it a necessary item when shortening slacks, sleeves, sweatshirts or mending. I have used mine to sew the outer edges of quilts too, cuts off the excess fabric and batting and makes it easier to sew on a binding if I want to. If I buy something, it has to pay its way, can't afford to have it sitting there collecting dust. Mine sits behind the regular machine and is ready to go.
Carol J.