Well underway on the build of the fin. First job was to weld in place the connecting tubes between the pair of centre fin spar tubes and add the stub tubes that support the channel that forms the aerofoil section. This should have been easy but for some reason took far more time than seemed reasonable. Perhaps that's because I brained myself on the horizontal stabiliser stub spar. Note that both ends now have protection taped on to avoid a repeat!!I then welded together the two pairs of channel in the angles required to meet at the fin trailing edge. These were then braised to the trailing edge and fin main spar taking care to keep the alignment with the rudder trailing edge. The top pair of channels were then curved round to fit over the stubs on centre spar and profiled to blend with the leading edge. A tack weld was used to fasten the top pair of channels to the fin leading edge before completing the joint with brazing as called for in the plans. Just need to do the same to the lower pair of channels and clean up the brazed joints and that's the fin complete except for installing a mount for the rear position light - haven't decided how to do this yet.
