RE: Midwest Citabria - Build Thread
Finishing the tips.
Adding the center section trailing edge pieces. The kit pieces are too fat. They are thicker at the leading edge than the trailing edge of the wing. About 1/16" too thick. No big deal. I used pins to secure the trailing edge of the wing to the building board. Pinned it down tight and flat to the board. Set the aileron stock down in place and shove it up tight against the trailing edge of the wing. Pin it down flat on the centerline of each wing rib. Use the big sanding block and knock 1/16" of balsa off the top until it lines up with the wing trailing edge. Pull the pins off the wing and pick it up. Move the pins in the aileron stock and sand out the high spots where the pins were originally placed. Helps to use a 24" sander.
Short sanding blocks make waves in your work. [:'(]
Pinned both ailerons down and drew the center line marks on them. Drew marks on the top about 3/8" back from the leading edge. Run a planer down it and knock it all off. If your careful and pay attention, you can plane the leading edges of the ailerons right down smooth and square. Ready for hinges. No sanding necessary. Takes 10 minutes to shave them down with a planer and it does a nice job. Just pay attention to your lines and don't get greedy. Use the big block sander or the 24" sander to clean them up if you need too.
Last ones for today.