Hughes XF-11. as seen in the movie, "The Aviator".
I think its pretty although it had problems. It, along with the Spruce Goose, were the planes that caused Congress to hold hearings on Hughes in the Truman Committee on war profiteering due to cost overruns while not producing an aircraft ordered.
The first prototype was lost in a crash because Hughes was apparently a crap test pilot and decided to do a joyride ending in a crash near the Los Angeles Country Club. What sort of idiot does a maiden test flight over a heavily populated area?
But its still a pretty airplane.
model in full dimensions in blender 2.79b and scaled to 1/100 for the .stl file
scale down to 35% in the slicer.
as usual, the dice are 15mm for reference
if I can't print it, I don't post it.