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Here's something I've been working for a few months, a fully 3D printed airframe, to test and practice the technology and to make a prototype of a design I've been wanting to build at a larger scale.

The airplane has a wingspan of almost one meter and the total weight of the airframe is around 400 grams, almost half of it from the wings, so later on I'll make foam wings with fiberglass skinning to save weight.

Here are some photos of the airframe and some parts:

This is how the wings are made, the printer moves in one single path from the bottom to the top, in a spiral motion creating the external shape and the internal supports all in one go.

The center fuselage section, the nose and tail sections are joined by four nylon screws.

The complete airframe, except for the EVA rubber nose tip.

I'm currently working on some small details, mostly on the interior figuring out the best layout for the R/C gear and making mountings and brackets for it.

First I'll test fly it with just the R/C gear, and if things go well I'll add an Ardupilot and/or FPV gear.

If anyone has a 3D printer the complete files to print one at home can be found here: http://www.thingiverse.com/thing:272478