The idea is something that I tried with one of my GPU blocks, except the middle thing was actually a complete copper plate with channels hanging down, and it was done on a CNC mill.
Overall I found the concept to be limited in effect. The block became a lot more restrictive with very minimal gains, however, yes, it was an improvement over the basic White Water, just not a big one.
Still, nice to see it out and about, strutting its stuff. I could never make it cheaply due to the fine-channel milling of two plates instead of the one.
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