Here are a few pictures up close and personal of the top stitched fused binding.
This is the edge of my quilt “Star Lillies” and is top stitched with #30 weight rayon thread.
The thread that I top stitched this quilt with is Laura’s #8 cotton and is put in the bobbin. When I put this in the bobbin I hand wind it on the bobbin and by pass the tension in the bobbin case, using a matching thread of lighter weight cotton on the top and sew from the back side. The heavier weight thread sits on the surface of the quilt and looks kinda loopy, like me.