The Sensor Q Foot is used for embroidery and free motion
sewing, quilting and embroidery on especially thick or spongy
fabrics. Put on the Sensor Q Foot for free-motion Quilting with
puffy battings, free-motion and built-in embroidery on fabric with
batting, thick terrycloth towels, and when there is a build up of
embroidery thread or couched decorative threads.