I think its a fine idea. The only question is this.. once you drill into copper or aluminum, the walls of the connected cups will tear out.. so you have a 4 leaf clover looking thing. The internal pin that separates the water into the outside cups will be/could be a jagged sharp spear or a point. Basically its almost just a larger cup with a pin in the middle.. kinda like a rotor block, that has the drilled holes separated out across the base.
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