First tests for my custom rad looks promising. It is totally sufficient for cooling a 65W APU. Now I need to find some thin pump/res/cpu block, etc to fit with my enclosure.
PS: if someone should be interested in the rad concept only, I have created a dedicated thread:
For my RCC-THIN1 thin mini ITX case I was looking for different cooling solutions when I came up with the idea to make it water cooled. Unfortunately I did not find any affordable radiator which would fit my case design. Finally I came up with the idea to build my own radiator out of aluminum...