Bobbin Couching--" Basically you wind the cord onto the bobbin, and I think
you set the needle on the machine
to a really wide zig zag, then you sew it down. It took a bit of fussing,
and I drew the lines onto the fabric so I had something to follow. Be warned
that my machine hasn't worked the same since I did that, although with
a
heavy duty machine like you have it's probably easier to do stuff like
this.