Yet another wing

This is my second wing, and - it even flies :-)
Even a looping, not really round but for the beginning not so bad: http://youtu.be/XIrR3X5ENus
Here is another video which is made by a friend. He added some videos of printing some parts of the plane and some stills of the preparing for the flight - and a wonderfull music that makes you feel as if the plane hovers almost weightless in the sky :-)
http://www.youtube.com/watch?v=ut_Ei22on58

This wing has straight middle sections, so th