I have used fusible thread before, but not Superiors. My thread has to be at least 20 or 30 yrs old. It still works, I just have to hold the iron on it for a few more seconds to melt the glue. I have used it for applique by just lying a thread under the fabric and ironing it in place. I have also used it as the top thread when sewing binding on from the back, so that the fusible thread is on top of quilt and seam, folding over binding edge onto fusible and ironing to fuse in place. It works the same as if you used glue to hold down the binding before sewing down. Then you can topstitch binding and if done correctly, it will stitch front and back at edges.