My grandfather had a mattress factory when I was young. He had a big machine he put the cotton or feathers in and it ran and I guess sterlized them. Then he sewed a ticking out of striped heavy ticking and then hand sewed with heavy yellow thread around the edge. People brought their old mattresses in to be refreshed. He added new to their old and made a new cover. He had an old Sewing commerical machine he sewed the ticking on. He did all this while totally blind. Amazing.