Water flow was surprisingly good. I tested the block with 590 l/h pump, which dropped flow to 490 l/h with 50 cm 1/2" ID tube, then to 340 l/h thrue this block, I also tested my older 5*5cm Cu cross drilled (10mm ID S shapped chanell) block which dropped to 250 l/h. So flow is not the problem.
As for making of this block, I made 3d model and get NC code with ProEngineer, then with a help of a friend with CNC Cincinnati mill, he post prosess this code for his machine and made it. We'll probably make few more prototypes with thicker base, and if it perform good,and some of you are interested, we could make a small series.A complete block with 4 spring, bolts and everything to put this block on a socketA mb, wouldn't cost more than 50$. I could send a sample to Joe for independent test. Stop me if I'm not allowed to do that.
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