Yes it took me a while but its fimally done. I have designed the case in Fusion 360 and after a number of iterations have finally settled on one that seems to do the job just nicely.
The original build for the component test can be found at http://www.grumpyoldtech.technology/Blog/Build_a_Component_Tester. There are details for the kit on EBay there as well.
The STL's for the case are at https://www.thingiverse.com/thing:2821595
Oh, i just setup the thingiverse accoutn and it makes you wait 24 Hours before publishing, so check the date of this post before downloading.