thanks to @janvantomme ... Ive finally got my enclosures sorted out
its a really nice design, and with patience and a steady hand easy to assemble.
I got Razorlab (UK) to cut them, used a 3mm acrylic at the front, Id say its fine, but makes the SD card a little tricky, but I just leave one in all of mine.
so here is my 'tiny' digital modular (its about 40x15x10cm )
Axolotis , PI 2 with HiFI berry DAC, BeagleBone Black + Audio Cape ... currently connected to a powered hub.
(Im going to replace the audio cape with Bela when released, and 1 more BBB + Bela)
need to do a bit of tidying up, slightly longer USB cables, then I plan to fit the enclosures in some kind of 'rack',
might change the BBB and PI to have matching cases too