December 5, 2005 - Longerons Bent!

I adjusted the left longeron curve, trimmed the aft end and match-drilled the F-721B aft deck to the longeron. 

The next step was to make the downward bend at the forward end.  Back goes the longeron into the vise.  I beat it with the rubber hammer a couple of times, then layed it flat on the concrete floor and measured  how high the forward end was off the floor.  When the forward end was 2 3/4" off the floor, it was right.  The last step was to clamp a big crescent wrench on the the forward end of the longeron and twist it.  It wasn't hard, but I was very, very careful to make sure I was twisting it in the right direction.   The right longeron came out fine, then I did the left longeron.  It came out fine as well.   

The longerons are done!  It was a little nerve-wracking but they turned out fine.  Now I can really go to town on the fuselage. 
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