I just had a problem with a batik in a collection of several others when doing a fusible applique wallhanging. One of the greens would not fuse down. I called a friend who is an expert on all things quilting. She said that it was because the wax did not wash out completely on that piece in the manufacture process. She suggested pouring boiling water over a scrap to see if would take out the wax. It did but it was too late for what I was doing. In the future I plan to test fusible web on a little scrap before cutting. Donna