The original box was nice but didn't fit the Smart Adaptor and had a few glitches.
The box shrinked too much when printed in ABS so I scaled it slightly to be printed in ABS. I also noticed that a few of the connectors were too close to the edge for the rails to work on the left side. So this has a notch for those and now it locks in nicely. The Smart adaptor sticks off the right side so I made a notch to receive that. I also made a pass through hole for the Smart Adaptor cables on the top plate. I lenghten the box to make room for the Smart Adaptor. Now it will hold a fully loaded RAMPS 1.4 board minus the sd reader since that is on the Smart control panel which this box now handles.