Gungnir: Odin H-bot

This is a project inspired by my father.
I want to make a bigger printer to make object up to 30cm tall.
The bounding box of this is about 60x60x50.
Laser cut structure on MDF 10mm. I started from the dxf file of the prusa i3 single plate, and then I have modified it.
There is still a lot of work to do.
Tell me what do you think.
Photogallery on my website
http://www.indiegearlab.com/galleria-fotografica-reprap-h-bot-gungnir
2014-07-11
I have build the structure. And now I'm testing it.
I change the type of movment. Now is a core xy reprap.
You can see a video here https://www.youtube.com/watch?v=OkwYAObTUDg
update 2014-09-23: I have produced a prototipe about a month ago, and now a friend of my is building the alpha version.
There is a lot o thinks to add, but shortly I want to update the file, so anyone can build this machine.
With the scad you can produce the dxf and the piece for your prefired size ;)