a. Using an authorized marking aid of contrasting color, mark a square around the damaged area
and ensure that the marking is at least ¼-inch back from edge of the damaged area.
b. Using a darning needle and a length of size A or E nylon thread, begin darning at one corner of
the marking area. Working parallel with the marking, pass the needle and thread back and forth
through the material until the opposite diagonal corner of the marked area is reached.
c. Turn the material, weave the needle, and thread back and forth across the stitching made above,
until the hole is completely darned.