04-02-2013: 2 hrs
It's kind of boring today, a lots of deburring work. I removed the top skin, deblued it and deburred the holes. I don't feel like I like to do the edge finish today. So I went ahead and drilled holes that will join the superstructure together. Oh, I did drill out the 6 holes between F7198 center rib to firewall. I didn't mark the position before clecoing the rib to firewall, so I had to mark the holes in assembly. I just made sure the end holes got enough edge marge, and evenly spaced the 6 holes, then used #30 angle drill to finish the work. Due to awkward drilling position, I got one hole enlongated on the rib, but all holes on firewall look good, except slight variation on spacing, no big deal, and it is the awkward drilling position to blame. I will use a doubler to fix the enlongated hole later during final riveting.
Next, I will take the superstructure apart, and do the routine deburring, cleaning, priming work.
With skin clecoed, I clamped the F7108B angle to fire wall stiffener for drilling when skin is off
The flange of rib is clamped to firewall for drilling
Drilled
Angle is drilled too
More superstructure parts are primed
Rudder pedals installed
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