Just a note on fusibles , when fusing batiks , heat and bond light and heavy will stain the fabric... kinda oily exaclty where the heat on bond is placed. Because it was not used for the entire piece of an applique it was very abvious. It does not show up immediatley. It ruined a project I was finished with ... when to do some final pressing and there it was .. this very apparent stain. It showed up after a few times of pressing and then cooling. Must be something that might be leftoever chemicals reacting with the heat and bond. I have not it happen with Wonder under or steam a seam when using batiks. Not sure why these brands react differnently.