Figure 7-22.  One side inspection.  Figure 7-19.  Corner fold. Figure 7-23.  Cutting out damaged area.  Figure 7-20.  Confirming patch alignment.  Figure 7-24.  Corner seam cut. Figure 7-21.  Correct patch tension. 18. Place the work under the sewing machine and, using  the hemostat, grab one ripstop box in from the cut  edge. Place the parachute fabric behind the fold back  of the patch forming a French fell seam. Do this in  two places and seat the one box fold back against the  patch stitch row with the tip of the hemostat. Sew  around the parachute patch repeating this process on  each side.  [Figures 7-25  and  7-26] 19. Take care that each corner is fully seated and square.  [Figure 7-27] 20. Use the side of the presser foot as a gauge for stitching.  [Figure 7-28] 15. If the fabric was loaded correctly, the patch will be  square and will lay flat with no bubble.  [Figure 7-22] 16. Using the scissors, cut the damage out along the rip  stop lines 7 boxes in from the stitching that holds the  patch on. Placing your hand between the patch and  parachute while trimming prevents damaging your  patch with the scissors.  [Figure 7-23] 17. Make a diagonal cut in each corner to 3 ripstop boxes  from the corner.  [Figure 7-24] 7-19