Tuesday, October 24, 2023

Fuselage center section #72 - Seat backs.

 Got started on the seat back part prep tonight.

Marked these heavy angles to cut away the chamfer on the end.  This allows clearance for the seat back to tilt forward without these angles hitting the floor.

Cut em.....

Prepped all the angles and the angle adjust rib.  The heavy angles are very heavy!  It took a while to clean them up and my scotchbrite wheel lost some diameter!

Then I cut these hinges.  The plans call for a weird way to measure them.  Screw that, waste too much material for no reason.  I just measured and cut them per the length and with the eyelets per the drawing.

Next came countersinking these stiffeners.  I just used the deburr tool to do this as the countersink cage will fall off the edges.  Just took my time and kept checking the depth with a rivet.

Then cut them apart and deburred the edges.

Next match drilled the hinges to the angle adjust ribs.

Then countersunk the backside for double flush rivets.  Also just used the deburr tool to do these.


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