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Convert your project fabric into one-sided fusible fabric with the Pellon 805 Wonder-Under. This fusible, paper-backed webbing can be used to fuse fabric with fabric, or to any porous surface like wood or cardboard. In this video, Kim Niedzwiecki from Pellon Projects shares how to iron the fusible web to make a lovely wonky cathedral window square. You can also use this iron-on adhesive for other home decor, applique, quilting and sewing projects.