I purchased two (expensive) teflon sheets for fusing appliques and was very happy with them until I used the cookie sheet baking liner paper that you get in the supermarket. The adhesive does not stick to this paper where it does the teflon sheets. Put a sheet down over the area on your ironing board and use another over the material when you press the adhesive on. I have used the same two sheets for months and one has a slight scortch mark. I never use the teflon anymore. So much cheaper.