Bias tape or
bias binding is
a narrow strip of fabric, cut on the
bias (UK cross-grain). The strip's fibers,
being at 45 degrees to the length of the strip, makes it stretchier as well
as more fluid and more drapeable compared to a strip that is cut on grain.
Many strips can be pieced together into a long "tape". The tape's width
varies from about 1/2" to about 3" depending on applications. Bias tape is
used in making piping, binding
finishing raw edges, etc.
Commercially available bias tape is available as a simple bias tape,
single-fold bias tape, and double-fold bias tape. Single-fold bias tape is
bias tape that is folded in half lengtwise on its center line, wrong side
together, and pressed. Double-fold bias tape is single-fold bias tape where
each half is again folded in half lengthwise, wrong sides together, and