Sorry for taking so long to reply, I've been so busy with the production I barely have time to breathe
, but that's a good thing..
I don't have a microscope at home, only a magnifying glass that has some light on it that I use to read small letters on electronic components as zener diodes and stuff, I couldn't see any air pocket with it but I don't know if I would see them with a microscope as I didn't try it. I also think bigben2k has a point.
I guess 0.11 C/W is a good number for a waterblock, that is the result I got from testing it but it's not a definitive number as my testing method was not totally right, on the other side I only added half of the heat dissiped by the pump so maybe it will stay around that.
Bruno Facca