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Table 2-3.  Stitching and Restitching Specifications - TM-10-1670-294-23P_63
Figure 2-36.  Hand Darning Method

TM-10-1670-294-23P Parachute Cargo Type: 35-Foot Diameter Ribbon Extraction Parachute NSN 1670-01-283-4031 Manual
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ARMY TM 10-1670-294-23&P AIR FORCE T.O. 13C5-33-2 NAVY NAVAIR 13-1-34 c. Darning.  (Refer to tables 2-2 and 2-3).  Darning is a sewing procedure used to repair limited size holes, rips, and tears in assorted air delivery items constructed from textile material such as parachute canopy gore sections.    A  darning  repair  may  be  made  either  by  hand  or  sewing  machine,  depending  upon  the  method preferred and the availability of equipment.  However, a darning machine should be used to darn small holes and tears where fabric is missing.  Darning of previously patched material can be performed provided darning size limitations prescribed in the paragraph applicable to the Item are not exceeded.  A darning repair will be performed using the following procedures, as appropriate. (1) Machine darning Proceed as follows: (a) Using   an   authorized   marking   aid   of   contrasting   color,   mark   a   square   around   the damaged area and ensure that the marking is at least 1/4 inch back from each edge of the damaged area.  The marking will be made with the warp and filling of the material. (b) Darn the damaged area by sewing the material in a back-and-forth manner, using size A or E nylon thread, allowing the stitching to run with the warp or filling of the fabric (A, figure 2-35). (c) Turn  the  material  and  stitch  back  and  forth  across  the  stitching  made  In  (b),  above, until the hole or tear is completely darned (B, figure 2-35). (d) If applicable, restencil Informational data, gore number(s), or identification marks using the criteria in paragraph 2-19. . Figure 2-35.  Darning Method Using a Darning Sewing Machine. (2) Hand darning.  When repair of a hole or tear is made by hand darning, the darn should match the  original  weave  of  the  damaged  material  as  closely  as  possible.    Hand  darning  will  be performed as follows. (a) Using an authorized marking aid of contrasting color, mark a square around the damaged area and  ensure  that  the  marking  is  a  least  1/4  inch  back  from  edge  of  the  damaged  area.    The marking will be made with the warp and filling of the material. 2-51







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