Step 1: Gather the materials and tools
2 x Standard USB to Micro USB cables
Black Spray Paint
Hacksaw with wood cutting blade
Single sided sticky foam
Felt (Which I didn't actually use, as I could get the controllers to fit)
Step 2: Start sawing
Then cut the two sections which hold the controls.
I used a hacksaw to cut the mainlines and then the dremel to remove the last of the material and generaly smooth it out.
A note of caution whe marking the depth for the controls, measure 90 degrees from the main line otherwise it'll be too thin.
Step 3: Create the holes for Micro USB connecter and cables
This step took a while as it was a bit hit or miss whether I got the holes in the right place.
Also remove material from the underside of the wood to run the cables.
Step 4: Spray and insert and secure cables.
Give it two even coats of the spray colour of your choice.
Once completely dry insert the micro USB cable ends from the underside up and check the controls connect nicely. This does require a bit of fiddling using bluetak to get them to sit correctly.
Once your confident on the location of the cables use the bluetak to secure them in place.
Step 5: Finishing up
I also attempted to apply the felt to the control sections but found I didn't cut the holes big enough to fit. Having gotten so far I didn't bother removing more material to use it.