A quilting rack, and I have made one for a woman that quilts is a wooden framed rack. However there aren't any nails, as that is right where the hand sewing takes place. Instead on a quilting rack, think of two six foot or longer rollers, one on each side, with a ratchet means of keeping the cloth wound between the two rollers tight. The backing material is wound onto the two rollers, then the quilting squares are sewn on, then the roller advanced toward you to sew on the next row of squares. Between the rollers, is usually no more than 2-4 foot. And that curtain stretcher, was for lace curtains, which could not be ironed, as my wife just told me.