Calling the airframe complete sans covering -
The center section cover/hatch was not remaining flat with the original, ply/balsa sandwich, so another 1/64" skin was added above the balsa with major grain now running chordwise to stiffen the whole thing up.
The small box closeout or ramp mentioned back in post #47 was added to the ascend of the tail section and hole added to accommodate the fuel line with fuse in folded position. Triangle stock in the corners could have done the same job here...
All airframe components were sanded with edges and corners rounded.
One picture shows various hardware items that go into the airframe including horns, spacers, washers, screws, a receiver, battery, switch harness, engine, fuel tank, magnets, throttle and release servos, extensions, and spar carry-through.
Weight of the airplane at 21.5 ounces prior to covering.
Ply/balsa/ply center section hatch and notches to clear pushrods -
1/16" balsa ramp tail closeout component parts -
Installation -
1/16" sheeting and hole for fuel line -
Approaching nested position of fuel line -
Sanding...
Blending...
Internal components and missing here are the four flight control servos and ten hatch/assembly screws -
Piling everything on the scale -
Weight of airplane prior to covering -