Finally, I turned the fuselage over on the strongback. I was a bit anxious that something that a part had accidentally been glued to the strongback. It came off perfectly, and after a little bit of wiggling and pulling I could look at the fuselage in its upright position.
There is a lot of sanding to do now. All the joints on the longerons and bulkheads show consistent glue squeeze-out, which indicates full adhesive coverage, so I accept the quality of the glue joints as good. The squeeze-out now needs to be scraped off and sanded smooth.
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Looking forward along the inside of the fuselage frame, upright for the first time.
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Side view of the upright fuselage frame resting on supports. The glue squeeze-out along the longerons is clearly visible.
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View from the tail along the fuselage toward the cabin section.
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Overall view of the fuselage frame, now right side up on trestles.