I don't use a stabilizer and have not had a problem with any machine appliqué quilts. The only time I do anything different is when I am appliquéing onto gingham for baby quilts. Then I place a piece of newsprint underneath the fabric where I'm going to appliqué and go for it. The newsprint does not allow the gingham to bunch up as I sew. Gingham is very flimsy fabric. The newsprint tears off easily after appliquéing using a blanket stitch.