I have been building a couple of Huxley Repraps, one for myself and assisting in building one for the Adelaide HackerSpace.
In order to be able to design things to print I am going to have to get my head around using CAD. FreeCAD looks like it will do most of the things that I need a CAD program to do, so I have spent a some time learning how to use it by drawing up a box that could be used to store, carry and display the finished Husleys.
It is a 32cm cube, to be made out of 9mm MDF, with rebated joints (glue and screw).
The Huxley will be bolted to the base with the box fitting over the top, similar to a sewing machine case. A method for keeping the base attached to the box has yet to be sorted out, although a sash-clamp/tie-down appears to be the easiest solution.
The inside dimensions are 302x302x302 where the Huxley (according to my measurements) is 295mm high. (So everything should fit... but I need to measure the other dimensions and adjust accordingly... 320mm was a nice initial number to work with.)
I haven't figured out a way to make the circular cuts with the CAD program, so the handle slots are all square.