Brief Description: Squared upper fuse sides and joined top.
This is the aft cross-fuse tube that supports the rotor pylon indirectly. Important to get square and straight, but I realize as I build this, that in theory, the squareness, incidence and straightness is not nearly as big an issue as with a fixed-wing plane. Since the rotor system is articulated in pitch and roll, if things were slightly out-of alignment, you would simply find yourself automatically correcting by holding in a correction at the stick. The only place you might notice a small misalignment would be if you ran out of control authority because you were holding in a big correction to start with.
Regardless, I'm endeavoring to make it straight. Tack-welded the cross-tube in place.
Note Super simple jigs. Screws/nails/boards. Quick.