Monofilament thread is ideally a machine thread. It is either nylon or polyester. The brands and weights that we stock are all finer than used to be seen in clothing construction!
Our most popular is YLI, nylon and size .004. It is extremely fine and soft, enough to make you change your mind about invisible thread.
Superior MonoPoly is also size .044 but as the name suggests is made from Polyester.
Use for machine quilting where you don't want colour to detract from the design, or invisible machine appliqué. Invisible thread is needed to create the 'hand look quilt stitches' found on electronic sewing machines.
We recommend that you use invisible thread the top with a cotton thread in the bottom. If using monofilament in the bobbin, care needs to be taken not to stretch the thread when winding the bobbin.