Goes without saying, that RC cars/planes are certainly a 3D printing strong point.
Originally shared by André Roy
OpenSwift! The first build in progress. An open source, mostly 3d printed flying wing airframe that hopefully anyone can build. Project supported by @Brook_Drumm and @Printrbot .
Build in progress, will release a zip of the beta STLs and CAD files I used to print this in a comment below this weekend.
Absolutely. This was something I’m planning on doing here fairly soon. Building a nice glider like we used to do with balsa. The density of ABS is fairly high though so it may be more ‘show’ than ‘glide’ 
Interesting. I think there’s a way to do a whole plane well, but it seems it needs a rework of slicing engine to do what I’d like of making a wing with some internal structure design that’s much more specific than typical infill, in one build per wing.
I like it.
@Jeff_DeMaagd , I think you’ll have to make the infill part of your model to get it where you want it.
@Dale_Dunn I can design that, but what I want is hard to describe.
The problem is slicers seem to want to do a perimeter on each surface. So I want to make a single wall outer shell of the airfoil, with hollows inside except where I want structure. But the slicer wants to put two walls in space where I only have designed room for a single wall.
@Jeff_DeMaagd I think I hear what you’re saying. I recently did a single wall part with Slic3r, but it was as simple shell, with no “interior” features. That said, I think Slic3r will do what you want if the walls are thin enough in the model.
I think I figured out a way to trick the slicer software. I would make two models, one is the airfoil surface, the other would be the interior structure, spars and ribs. It should fuse into one strong, but light part. It might require turning off some collision fix ups.
@Chuck_McManis the frame as shown in that picture weighs ~550 grams with the motor. I’m estimating the final weight to be about 850g with battery. It has a light wing loading and high power to weight ratio.
