This is a cover for the back of the JD robot from http://www.ez-robot.com
Included are .stl files for the complete backpack and a split version with top and bottom to save in print material and time.
The project history can be found on the EZ-Robot forum at: http://www.ez-robot.com/Community/Forum/Thread?threadId=9352
Only the custom back cover for JD is included here. If you require the other JD robot .stl files you can obtain those from EZ-Robot at http://www.ez-robot.com
If you print the split version you'll need to glue them together and I would recommend using an ABS glue made from heavy duty acetone and ABS bits (assuming you are print in ABS vs. PLA). Other glues or hot glue should be fine as well, but I prefer ABS glue. Or you could drill small holes in the corners and screw the two pieces together with small screws.
There are two versions of the bottom, one has a sold flat back and one has an open back.
When printing the two part version, I use a little higher resolution or infill for the top.