a. Restitching. Restitch the pack fabric (1) directly over old stitching using size E thread, 7 to 11 stitches per inch,
and an MD sewing machine. Lock stitching at least 1/2 inch.
b. Darning. Darn a hole or tear in the pack fabric that does not exceed 1 inch in length or diameter using size E
thread and a darning machine. There is no limit to darns that may be applied, provided they do not weaken or reduce the
original strength of the fabric more than 10%. If damage is in the lined portion of the pack body and only the cotton duck
is damaged, darn through duck and felt. If felt is also damaged, remove damaged area before darning duck fabric. Then
plug felt as in c.(3) below.
c. Patching. There is no limit to the number of times the pack body may be patched. Patch a hole or tear that
exceeds 1 inch in length or diameter following procedures in (1) or (2) below. Use cotton duck cloth according to original
construction for patching outside, and 1/4 inch thick felt for plugging inside lining. Use an MD sewing machine, size FF
thread, and 7 to 9 stitches per inch.
(1) To patch a lined portion of the pack (1) when the felt (2) is not damaged, cut nylon or cotton duck patch (3) 2
inches beyond circumference.of damaged portion. Turn under edges of patch 1/2 inch and center patch over damaged
area. Sew patch to container body with a double row of stitching (4) as shown.