Left-homing means that when set to straight stitch, a machine's needle bar will be set in the left portion of a zig-zag foot, for example. ('Homing' meaning 'residing' rather than 'trending'.) This has implications as to the number of feed dogs feeding the fabric, the type of feet that are best for straight-stitching on such a machine, etc. I'm not a quilter but as I understand, this is not ideal for quilting.