a method and apparatus for continuously producing preselected lengths of coiled tubing are disclosed . according to the method , plastic tubing is continuously wound onto a rotating main tube shaft . downstream from the point where the tubing begins to wind about the shaft , a heat source is directed toward the coiled tubing , softening it as it traverses thereby . further downstream , a cool - air source directed at the softened tubing sets the tubing into its coiled form . subsequently , the coiled tubing is cut into preselected lengths by a cutter downstream from the cool - air source .