DeltaWing with Printed Bits

This is a little DeltaWing project I adapted with the addition of some 3D printed parts. The original designs came from the following websites which include videos on how to construct them and demonstrate them in flight.
The original websites are;
https://sites.google.com/site/projectflightd/delta-pusher
http://www.intensewalkera.webspace.virginmedia.com/ for the original pdf plan.
http://flitetest.com/articles/delta-pusher-design-flight-and-build-video#sthash.C8sJpBo1.dpuf
We're just printing the battery holder and the motor mount. OK, so we're not printing the whole plane.
In the instructions page there are some notes about handling, and some modifications.