INT- Heavy Duty Wonder-Under $2.99/yd. from Hobby Lobby for mini sofa tutorial Fabric is 17" wide Available in 1-yard increments only. The paper-backed adhesive web that turns any fabric into a fusible fabric. Fuses fabric to fabric or to a porous surface such as wood or cardboard. For denim, canvas or other heavy fabrics, use Heavy Duty Wonder Under, when extra holding power is needed. ALWAYS PRE-TEST. Has no grain - can be cut and applied in any direction.