[Stefan]

Jens, that´s not a spoiler, I´ve thought of that, too, but the original has a plate like that, so I made it (them). In reality each hole carries a fitting, to which a hose is attached from both sides. Obviously the holes are too small for model fittings (at least the ones you can buy), and many of them are even too small for the hoses I intend to use. So, depending on how many hoses will actually pass the waist (depends on whether I put valves also in the front frame) maybe I will use the plates, maybe not (edit: What I mean is: for a smaller number of hoses I can use the larger holes and include some kind of hose protection).