It's the technique in her book, Piecelique, that uses the leave-in foundation for turned-under applique. I got all the stuff and am experimenting with it this afternoon. So far, I'm not liking it as much as Harriet Hargrave's freezer paper approach. The foundation isn't as firm as freezer paper, so it seems to be more difficult to cut a precise edge and also to turn a precise edge.
Just wondering if anyone else has used either technique? I've been happy with using freezer paper, but was hoping to avoid the step of removing it after the applique was sewn. Since I tend to be a perfectionist, I'm thinking I may have to just live with that step.