Brief Description: Step #3 and 4 Dimpling skins and c-sinking stringe
1 hour to finish dimpling second skin. Tested and set c-sinking cage for dimples in .025" thick skin. C-sunk #40 holes in the HS -00914 Stringers .010" deeper than flush rivet. This depth is not deep enough to oversize the hole and a good fit for the dimple in the sample. Finished both stringers.
