[davidzo]

[x] by a good commercial waterblock and see that it performs much better.

This cooler doesn't make that much sense to me. there is no funny new idea in it that maximizes performance in any way and nothing that minimizes milling time compared to much easier commercial blocks. just forget it and rethink about an easier way. or else just get some copper and dremel a little and test it yourself. you will notice that there are complicated ways to make ineffevtive coolers and easy ways to make better ones. this cooler would cool down a little for sure, but with few modifications it could be way better with much less than a third of millingtime.