Now, on that last one.... are you going to chill a TEC with it? if not, then remove as much of the holes that are not productive in cooling the core area or acting as defusing/collecting areas for incoming and outgoing fluids.
in other words if you are going for a 2 inlet block the hole pattern might end up looking like an hour-glass, with the thin part over the core....
I would go out on a limb and say that if my block in the test was of such configuration, it might have faired considerably better than the one tested, reason being that the hour-glass setup would much better concentrate the cooling to the location over the core...
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There is no Spoon....
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