Hello, you did a great job with the frame for the power cube. But this had already be done :(. Plz check the correct item here http://opensourceecology.org/wiki/File:PC_1708_Frame_module.fcstd You can see at the design sprint documents who is doing what task in order to avoid wasting time in something that is been done by someone else :)
Cubic test finished
Cubic test in You tube Media:https://www.youtube.com/watch?v=zNTf4zllnAU
Upload the cubic file
adding the drawing Media:http://opensourceecology.org/wiki/File:Cubic.fcstd
Learning from Youtube how to use freecad  about 20hours
Making Full Cubic by freecad in windows
That take 4 hours working to learn , try and fail to do a full cubic for pre-preparation to do it in Linux.