I've yet to build any 43mm racks for one of these, but it's certainly feasible if I'm making the inserts out of wood as well. I'll do some math and figure out capacity today snd shoot you a PM in a bit.
Finally got the cabinet about 95% wrapped up and pulled it outside to take some beauty shots. Still need to borrow a set of chips to show it off loaded up, but until then figured y'all will still want to see the finished product. For reference, the case is build of solid white oak with the top and side panels made of African mahogany. Each of the trays are made of white oak sides, with the front and back highlighting a different wood as well. In these photos those woods are (from top to bottom) figured black cherry, walnut, sapele, brown-dyed figured maple. The last bit I need to figure out is the internal lighting. I got some LED strip lighting in, but needed some additional wiring parts. I also need to determine if I'm just running lights along the top, or also down the sides, inside the case.
And now I'll just blast you with photos... All credit for photography goes to my lovely wife.