Well this is pretty cool.
Apparently Boeing has been using a technology called 3d printing with FDM on it's planes. http://www.indiatimes.com/technology/science-and-future/boeing-s-dreamliner-787-will-be-the-first-aeroplane-to-have-3d-printed-titanium-body-parts-275445.html
Has anyone heard of this?
The way it works is you simply upload a design file in these machines and out pops a physical version of it. I'm assuming it prints out in parts and you assemble them.
Heck they even have these for model rc planse like for this Spitfire. https://pinshape.com/items/8135-3d-printed-3d-printed-rc-spitfire-mk-xvi-ver12
Love to make my own custom parts if this thing is not expensive.