2 x similar rigs of 6 x 280X's

Need a lot of tuning yet but haven't had the time

Frames are off-the-shelf steel from Bunnings for $37ea =D They stack nicely... I can remove one frame to work on it, then stack them back, all without powering down the miners.

I've modified them slightly - only using one shelf, but added right-angle aluminium for the cards to sit on.