[QUOTE=feline fanatic;6235291]It is my understanding the allure of wool applique is it is all raw edge, you don't have to turn under because it doesn't fray because the wool has been felted (washed and dryed so it shrunk up good and tight). At least that is my understanding. You just buttonhole stitch around. But do you have to fuse it? I haven't inspected it closely when seeing it at booths or in shops. It is very appealing though.
I have never used any fusible product on my wool appliques- I use freezer paper to cut out my shapes-then just place a small sharp pin to hold the shape in its place until I stitch it down- I have seen a couple patterns that called for fusible but it is not something I see a purpose for- a spot of glue may work well to hold your pieces if you don't want to use pins, or just hold them with your fingers. ...as for the question about machine appliqueing your pieces- if that's what you want to do- no reason why you couldn't- just use a blanket stitch- wide enough to hold the edges of the wools. it is such a nice 'hand project' though