two yrs ago at a retreat my sister (a nonquilter) was there working on kids flannel story boards. she drew a pattern for me to show her how to fuse it to fabric using a frixion pen. she uses the frixion pens often because of they can be erased easily. she was shocked when her drawing disappeared after she ironed it. but then she was pleasantly surprised when she could put it in the freezer and get the drawing back to cut out.