i did machine quilt my wool "backyard Gathering" quilt, black hand appliqued/queen size. i used the black heirloom Hobbs batting, it was wonderful to quilt! as wonderful as it is to applique with wool; I love working with wool! i machine piece, embroider, applique and quilt wools all the time. (long-arm) if using a regular machine i would think you would definitly need a walking foot, because of the bulk.