I drilled the stiffener angles. Then I deburred everything. This took a while. Then I dimpled the ribs and stiffeners.
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I drilled the filler collar and drain to the tank skin. I held each in
place with a clamp, drilled the hole closest to the clam, put in a cleco
and then did the same for the rest of the holes. I drilled the stiffener angles. Then I deburred everything. This took a while. Then I dimpled the ribs and stiffeners. |
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